/classifications/ddc/list
Type: /type/page
body: value: See also: the [list of Library of Congress Classifications](/classifications/lcc/list)

Top level classes:

* [Class 000 – Computer science, information & general works](#class-000)
* [Class 100 – Philosophy & psychology](#class-100)
* [Class 200 – Religion](#class-200)
* [Class 300 – Social sciences](#class-300)
* [Class 400 – Language](#class-400)
* [Class 500 – Science](#class-500)
* [Class 600 – Technology](#class-600)
* [Class 700 – Arts & recreation](#class-700)
* [Class 800 – Literature](#class-800)
* [Class 900 – History & geography](#class-900)

---

<a name="class-000"></a>

## [Class 000 – Computer science, information & general works](https://openlibrary.org/search?q=ddc:0*)

### [000 Computer science, knowledge & systems](https://openlibrary.org/search?q=ddc:00*)
* [000 Computer science, information & general works](https://openlibrary.org/search?q=ddc:000*)
* [001 Knowledge](https://openlibrary.org/search?q=ddc:001*)
* [002 The book (writing, libraries, and book-related topics)](https://openlibrary.org/search?q=ddc:002*)
* [003 Systems](https://openlibrary.org/search?q=ddc:003*)
* [004 Data processing & computer science](https://openlibrary.org/search?q=ddc:004*)
* [005 Computer programming, programs & data](https://openlibrary.org/search?q=ddc:005*)
* [006 Special computer methods](https://openlibrary.org/search?q=ddc:006*)
* [007–009 [Unassigned]](https://openlibrary.org/search?q=ddc:[007 TO 009])
### [010 Bibliographies](https://openlibrary.org/search?q=ddc:01*)
* [010 Bibliography](https://openlibrary.org/search?q=ddc:010*)
* [011 Bibliographies](https://openlibrary.org/search?q=ddc:011*)
* [012 Bibliographies of individuals](https://openlibrary.org/search?q=ddc:012*)
* [013 [Unassigned]](https://openlibrary.org/search?q=ddc:013*)
* [014 Bibliographies of anonymous & pseudonymous works](https://openlibrary.org/search?q=ddc:014*)
* [015 Bibliographies of works from specific places](https://openlibrary.org/search?q=ddc:015*)
* [016 Bibliographies of works on specific subjects](https://openlibrary.org/search?q=ddc:016*)
* [017 General subject catalogs](https://openlibrary.org/search?q=ddc:017*)
* [018 Catalogs arranged by author, date, etc.](https://openlibrary.org/search?q=ddc:018*)
* [019 Dictionary catalogs](https://openlibrary.org/search?q=ddc:019*)
### [020 Library & information sciences](https://openlibrary.org/search?q=ddc:02*)
* [020 Library & information sciences](https://openlibrary.org/search?q=ddc:020*)
* [021 Library relationships (with archives, information centers, etc.)](https://openlibrary.org/search?q=ddc:021*)
* [022 Administration of physical plant](https://openlibrary.org/search?q=ddc:022*)
* [023 Personnel management](https://openlibrary.org/search?q=ddc:023*)
* [024 [Unassigned]](https://openlibrary.org/search?q=ddc:024*)
* [025 Library operations](https://openlibrary.org/search?q=ddc:025*)
* [026 Libraries for specific subjects](https://openlibrary.org/search?q=ddc:026*)
* [027 General libraries](https://openlibrary.org/search?q=ddc:027*)
* [028 Reading & use of other information media](https://openlibrary.org/search?q=ddc:028*)
* [029 [Unassigned]](https://openlibrary.org/search?q=ddc:029*)
### [030 Encyclopedias & books of facts](https://openlibrary.org/search?q=ddc:03*)
* [030 General encyclopedic works](https://openlibrary.org/search?q=ddc:030*)
* [031 Encyclopedias in American English](https://openlibrary.org/search?q=ddc:031*)
* [032 Encyclopedias in English](https://openlibrary.org/search?q=ddc:032*)
* [033 Encyclopedias in other Germanic languages](https://openlibrary.org/search?q=ddc:033*)
* [034 Encyclopedias in French, Occitan, and Catalan](https://openlibrary.org/search?q=ddc:034*)
* [035 Encyclopedias in Italian, Romanian, and related languages](https://openlibrary.org/search?q=ddc:035*)
* [036 Encyclopedias in Spanish & Portuguese](https://openlibrary.org/search?q=ddc:036*)
* [037 Encyclopedias in Slavic languages](https://openlibrary.org/search?q=ddc:037*)
* [038 Encyclopedias in Scandinavian languages](https://openlibrary.org/search?q=ddc:038*)
* [039 Encyclopedias in other languages](https://openlibrary.org/search?q=ddc:039*)
### [040 Unassigned (formerly Biographies)](https://openlibrary.org/search?q=ddc:04*)
### [050 Magazines, journals & serials](https://openlibrary.org/search?q=ddc:05*)
* [050 General serial publications](https://openlibrary.org/search?q=ddc:050*)
* [051 Serials in American English](https://openlibrary.org/search?q=ddc:051*)
* [052 Serials in English](https://openlibrary.org/search?q=ddc:052*)
* [053 Serials in other Germanic languages](https://openlibrary.org/search?q=ddc:053*)
* [054 Serials in French, Occitan, and Catalan](https://openlibrary.org/search?q=ddc:054*)
* [055 Serials in Italian, Romanian, and related languages](https://openlibrary.org/search?q=ddc:055*)
* [056 Serials in Spanish & Portuguese](https://openlibrary.org/search?q=ddc:056*)
* [057 Serials in Slavic languages](https://openlibrary.org/search?q=ddc:057*)
* [058 Serials in Scandinavian languages](https://openlibrary.org/search?q=ddc:058*)
* [059 Serials in other languages](https://openlibrary.org/search?q=ddc:059*)
### [060 Associations, organizations & museums](https://openlibrary.org/search?q=ddc:06*)
* [060 General organizations & museum science](https://openlibrary.org/search?q=ddc:060*)
* [061 Organizations in North America](https://openlibrary.org/search?q=ddc:061*)
* [062 Organizations in British Isles; in England](https://openlibrary.org/search?q=ddc:062*)
* [063 Organizations in central Europe; in Germany](https://openlibrary.org/search?q=ddc:063*)
* [064 Organizations in France & Monaco](https://openlibrary.org/search?q=ddc:064*)
* [065 Organizations in Italy & adjacent islands](https://openlibrary.org/search?q=ddc:065*)
* [066 Organizations in Iberian peninsula & adjacent islands](https://openlibrary.org/search?q=ddc:066*)
* [067 Organizations in eastern Europe; in Russia](https://openlibrary.org/search?q=ddc:067*)
* [068 Organizations in other geographic areas](https://openlibrary.org/search?q=ddc:068*)
* [069 Museum science](https://openlibrary.org/search?q=ddc:069*)
### [070 News media, journalism & publishing](https://openlibrary.org/search?q=ddc:07*)
* [070 News media, journalism, and publishing](https://openlibrary.org/search?q=ddc:070*)
* [071 Newspapers in North America](https://openlibrary.org/search?q=ddc:071*)
* [072 Newspapers in British Isles; in England](https://openlibrary.org/search?q=ddc:072*)
* [073 Newspapers in central Europe; in Germany](https://openlibrary.org/search?q=ddc:073*)
* [074 Newspapers in France & Monaco](https://openlibrary.org/search?q=ddc:074*)
* [075 Newspapers in Italy & adjacent islands](https://openlibrary.org/search?q=ddc:075*)
* [076 Newspapers in Iberian peninsula & adjacent islands](https://openlibrary.org/search?q=ddc:076*)
* [077 Newspapers in eastern Europe; in Russia](https://openlibrary.org/search?q=ddc:077*)
* [078 Newspapers in Scandinavia](https://openlibrary.org/search?q=ddc:078*)
* [079 Newspapers in other geographic areas](https://openlibrary.org/search?q=ddc:079*)
### [080 Quotations](https://openlibrary.org/search?q=ddc:08*)
* [080 General collections](https://openlibrary.org/search?q=ddc:080*)
* [081 Collections in American English](https://openlibrary.org/search?q=ddc:081*)
* [082 Collections in English](https://openlibrary.org/search?q=ddc:082*)
* [083 Collections in other Germanic languages](https://openlibrary.org/search?q=ddc:083*)
* [084 Collections in French, Occitan, Catalan](https://openlibrary.org/search?q=ddc:084*)
* [085 Collections in Italian, Romanian, & related languages](https://openlibrary.org/search?q=ddc:085*)
* [086 Collections in Spanish & Portuguese](https://openlibrary.org/search?q=ddc:086*)
* [087 Collections in Slavic languages](https://openlibrary.org/search?q=ddc:087*)
* [088 Collections in Scandinavian languages](https://openlibrary.org/search?q=ddc:088*)
* [089 Collections in other languages](https://openlibrary.org/search?q=ddc:089*)
### [090 Manuscripts & rare books](https://openlibrary.org/search?q=ddc:09*)
* [090 Manuscripts and rare books](https://openlibrary.org/search?q=ddc:090*)
* [091 Manuscripts](https://openlibrary.org/search?q=ddc:091*)
* [092 Block books](https://openlibrary.org/search?q=ddc:092*)
* [093 Incunabula](https://openlibrary.org/search?q=ddc:093*)
* [094 Printed books](https://openlibrary.org/search?q=ddc:094*)
* [095 Books notable for bindings](https://openlibrary.org/search?q=ddc:095*)
* [096 Books notable for illustrations](https://openlibrary.org/search?q=ddc:096*)
* [097 Books notable for ownership or origin](https://openlibrary.org/search?q=ddc:097*)
* [098 Prohibited works, forgeries, and hoaxes](https://openlibrary.org/search?q=ddc:098*)
* [099 Books notable for format](https://openlibrary.org/search?q=ddc:099*)

<a name="class-100"></a>

## [Class 100 – Philosophy & psychology](https://openlibrary.org/search?q=ddc:1*)

### [100 Philosophy](https://openlibrary.org/search?q=ddc:10*)
* [100 Philosophy & psychology](https://openlibrary.org/search?q=ddc:100*)
* [101 Theory of philosophy](https://openlibrary.org/search?q=ddc:101*)
* [102 Miscellany](https://openlibrary.org/search?q=ddc:102*)
* [103 Dictionaries & encyclopedias](https://openlibrary.org/search?q=ddc:103*)
* [104 [Unassigned]](https://openlibrary.org/search?q=ddc:104*)
* [105 Serial publications](https://openlibrary.org/search?q=ddc:105*)
* [106 Organizations & management](https://openlibrary.org/search?q=ddc:106*)
* [107 Education, research, related topics of philosophy](https://openlibrary.org/search?q=ddc:107*)
* [108 Groups of people](https://openlibrary.org/search?q=ddc:108*)
* [109 History & collected biography](https://openlibrary.org/search?q=ddc:109*)
### [110 Metaphysics](https://openlibrary.org/search?q=ddc:11*)
* [110 Metaphysics](https://openlibrary.org/search?q=ddc:110*)
* [111 Ontology](https://openlibrary.org/search?q=ddc:111*)
* [112 No longer used—formerly Methodology](https://openlibrary.org/search?q=ddc:112*)
* [113 Cosmology (Philosophy of nature)](https://openlibrary.org/search?q=ddc:113*)
* [114 Space](https://openlibrary.org/search?q=ddc:114*)
* [115 Time](https://openlibrary.org/search?q=ddc:115*)
* [116 Change](https://openlibrary.org/search?q=ddc:116*)
* [117 Structure](https://openlibrary.org/search?q=ddc:117*)
* [118 Force and energy](https://openlibrary.org/search?q=ddc:118*)
* [119 Number and quantity](https://openlibrary.org/search?q=ddc:119*)
### [120 Epistemology](https://openlibrary.org/search?q=ddc:12*)
* [120 Epistemology, causation, and humankind](https://openlibrary.org/search?q=ddc:120*)
* [121 Epistemology (Theory of knowledge)](https://openlibrary.org/search?q=ddc:121*)
* [122 Causation](https://openlibrary.org/search?q=ddc:122*)
* [123 Determinism and indeterminism](https://openlibrary.org/search?q=ddc:123*)
* [124 Teleology](https://openlibrary.org/search?q=ddc:124*)
* [125 No longer used—formerly Infinity](https://openlibrary.org/search?q=ddc:125*)
* [126 The self](https://openlibrary.org/search?q=ddc:126*)
* [127 The unconscious & the subconscious](https://openlibrary.org/search?q=ddc:127*)
* [128 Humankind](https://openlibrary.org/search?q=ddc:128*)
* [129 Origin & destiny of individual souls](https://openlibrary.org/search?q=ddc:129*)
### [130 Parapsychology & occultism](https://openlibrary.org/search?q=ddc:13*)
* [130 Parapsychology & occultism](https://openlibrary.org/search?q=ddc:130*)
* [131 Parapsychological and occult methods for achieving well-being, happiness, success](https://openlibrary.org/search?q=ddc:131*)
* [132 No longer used—formerly Mental derangements](https://openlibrary.org/search?q=ddc:132*)
* [133 Specific topics in parapsychology & occultism](https://openlibrary.org/search?q=ddc:133*)
* [134 No longer used—formerly Mesmerism & Clairvoyance](https://openlibrary.org/search?q=ddc:134*)
* [135 Dreams & mysteries](https://openlibrary.org/search?q=ddc:135*)
* [136 No longer used—formerly Mental characteristics](https://openlibrary.org/search?q=ddc:136*)
* [137 Divinatory graphology](https://openlibrary.org/search?q=ddc:137*)
* [138 Physiognomy](https://openlibrary.org/search?q=ddc:138*)
* [139 Phrenology](https://openlibrary.org/search?q=ddc:139*)
### [140 Philosophical schools of thought](https://openlibrary.org/search?q=ddc:14*)
* [140 Specific philosophical schools and viewpoints](https://openlibrary.org/search?q=ddc:140*)
* [141 Idealism & related systems & doctrines](https://openlibrary.org/search?q=ddc:141*)
* [142 Critical philosophy](https://openlibrary.org/search?q=ddc:142*)
* [143 Bergsonism & intuitionism](https://openlibrary.org/search?q=ddc:143*)
* [144 Humanism & related systems & doctrines](https://openlibrary.org/search?q=ddc:144*)
* [145 Sensationalism](https://openlibrary.org/search?q=ddc:145*)
* [146 Naturalism & related systems & doctrines](https://openlibrary.org/search?q=ddc:146*)
* [147 Pantheism & related systems & doctrines](https://openlibrary.org/search?q=ddc:147*)
* [148 Dogmatism, eclecticism, liberalism, syncretism, & traditionalism](https://openlibrary.org/search?q=ddc:148*)
* [149 Other philosophical systems & doctrines](https://openlibrary.org/search?q=ddc:149*)
### [150 Psychology](https://openlibrary.org/search?q=ddc:15*)
* [150 Psychology](https://openlibrary.org/search?q=ddc:150*)
* [151 No longer used—formerly Intellect](https://openlibrary.org/search?q=ddc:151*)
* [152 Sensory perception, movement, emotions, & physiological drives](https://openlibrary.org/search?q=ddc:152*)
* [153 Conscious mental processes & intelligence](https://openlibrary.org/search?q=ddc:153*)
* [154 Subconscious & altered states & processes](https://openlibrary.org/search?q=ddc:154*)
* [155 Differential & developmental psychology](https://openlibrary.org/search?q=ddc:155*)
* [156 Comparative psychology](https://openlibrary.org/search?q=ddc:156*)
* [157 No longer used—formerly Emotions](https://openlibrary.org/search?q=ddc:157*)
* [158 Applied psychology](https://openlibrary.org/search?q=ddc:158*)
* [159 No longer used—formerly Will ](https://openlibrary.org/search?q=ddc:159*)
### [160 Philosophical logic](https://openlibrary.org/search?q=ddc:16*)
* [160 Philosophical logic](https://openlibrary.org/search?q=ddc:160*)
* [161 Induction](https://openlibrary.org/search?q=ddc:161*)
* [162 Deduction](https://openlibrary.org/search?q=ddc:162*)
* [163–164 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:[163 TO 164])
* [165 Fallacies & sources of error](https://openlibrary.org/search?q=ddc:165*)
* [166 Syllogisms](https://openlibrary.org/search?q=ddc:166*)
* [167 Hypotheses](https://openlibrary.org/search?q=ddc:167*)
* [168 Argument & persuasion](https://openlibrary.org/search?q=ddc:168*)
* [169 Analogy](https://openlibrary.org/search?q=ddc:169*)
### [170 Ethics](https://openlibrary.org/search?q=ddc:17*)
* [170 Ethics (Moral philosophy)](https://openlibrary.org/search?q=ddc:170*)
* [171 Ethical systems](https://openlibrary.org/search?q=ddc:171*)
* [172 Political ethics](https://openlibrary.org/search?q=ddc:172*)
* [173 Ethics of family relationships](https://openlibrary.org/search?q=ddc:173*)
* [174 Occupational ethics](https://openlibrary.org/search?q=ddc:174*)
* [175 Ethics of recreation, leisure, public performances, communication](https://openlibrary.org/search?q=ddc:175*)
* [176 Ethics of sex & reproduction](https://openlibrary.org/search?q=ddc:176*)
* [177 Ethics of social relations](https://openlibrary.org/search?q=ddc:177*)
* [178 Ethics of consumption](https://openlibrary.org/search?q=ddc:178*)
* [179 Other ethical norms](https://openlibrary.org/search?q=ddc:179*)
### [180 Ancient, medieval, & Eastern philosophy](https://openlibrary.org/search?q=ddc:18*)
* [180 Ancient, medieval, eastern philosophy](https://openlibrary.org/search?q=ddc:180*)
* [181 Eastern philosophy](https://openlibrary.org/search?q=ddc:181*)
* [182 Pre-Socratic Greek philosophies](https://openlibrary.org/search?q=ddc:182*)
* [183 Sophistic, Socratic, related Greek philosophies](https://openlibrary.org/search?q=ddc:183*)
* [184 Platonic philosophy](https://openlibrary.org/search?q=ddc:184*)
* [185 Aristotelian philosophy](https://openlibrary.org/search?q=ddc:185*)
* [186 Skeptic & Neoplatonic philosophies](https://openlibrary.org/search?q=ddc:186*)
* [187 Epicurean philosophy](https://openlibrary.org/search?q=ddc:187*)
* [188 Stoic philosophy](https://openlibrary.org/search?q=ddc:188*)
* [189 Medieval Western philosophy](https://openlibrary.org/search?q=ddc:189*)
### [190 Modern Western philosophy (19th-century, 20th-century)](https://openlibrary.org/search?q=ddc:19*)
* [190 Modern Western & other noneastern philosophy](https://openlibrary.org/search?q=ddc:190*)
* [191 Philosophy of the United States and Canada](https://openlibrary.org/search?q=ddc:191*)
* [192 Philosophy of the British Isles](https://openlibrary.org/search?q=ddc:192*)
* [193 Philosophy of Germany and Austria](https://openlibrary.org/search?q=ddc:193*)
* [194 Philosophy of France](https://openlibrary.org/search?q=ddc:194*)
* [195 Philosophy of Italy](https://openlibrary.org/search?q=ddc:195*)
* [196 Philosophy of Spain and Portugal](https://openlibrary.org/search?q=ddc:196*)
* [197 Philosophy of Russia](https://openlibrary.org/search?q=ddc:197*)
* [198 Philosophy of Scandinavia & Finland](https://openlibrary.org/search?q=ddc:198*)
* [199 Philosophy in other geographic areas](https://openlibrary.org/search?q=ddc:199*)

<a name="class-200"></a>

## [Class 200 – Religion](https://openlibrary.org/search?q=ddc:2*)

### [200 Religion](https://openlibrary.org/search?q=ddc:20*)
* [200 Religion](https://openlibrary.org/search?q=ddc:200*)
* [201 Religious mythology, general classes of religion, interreligious relations and attitudes, social theology](https://openlibrary.org/search?q=ddc:201*)
* [202 Doctrines](https://openlibrary.org/search?q=ddc:202*)
* [203 Public worship and other practices](https://openlibrary.org/search?q=ddc:203*)
* [204 Religious experience, life, practice](https://openlibrary.org/search?q=ddc:204*)
* [205 Religious ethics](https://openlibrary.org/search?q=ddc:205*)
* [206 Leaders and organization](https://openlibrary.org/search?q=ddc:206*)
* [207 Missions and religious education](https://openlibrary.org/search?q=ddc:207*)
* [208 Sources](https://openlibrary.org/search?q=ddc:208*)
* [209 Sects and reform movements](https://openlibrary.org/search?q=ddc:209*)
### [210 Philosophy & theory of religion](https://openlibrary.org/search?q=ddc:21*)
* [210 Philosophy & theory of religion](https://openlibrary.org/search?q=ddc:210*)
* [211 Concepts of God](https://openlibrary.org/search?q=ddc:211*)
* [212 Existence, ways of knowing God, attributes of God](https://openlibrary.org/search?q=ddc:212*)
* [213 Creation](https://openlibrary.org/search?q=ddc:213*)
* [214 Theodicy](https://openlibrary.org/search?q=ddc:214*)
* [215 Science & religion](https://openlibrary.org/search?q=ddc:215*)
* [216 No longer used—formerly Evil](https://openlibrary.org/search?q=ddc:216*)
* [217 No longer used—formerly Prayer](https://openlibrary.org/search?q=ddc:217*)
* [218 Humankind](https://openlibrary.org/search?q=ddc:218*)
* [219 No longer used—formerly Analogies](https://openlibrary.org/search?q=ddc:219*)
### [220 The Bible](https://openlibrary.org/search?q=ddc:22*)
* [220 Bible](https://openlibrary.org/search?q=ddc:220*)
* [221 Old Testament (Tanakh)](https://openlibrary.org/search?q=ddc:221*)
* [222 Historical books of Old Testament](https://openlibrary.org/search?q=ddc:222*)
* [223 Poetic books of Old Testament](https://openlibrary.org/search?q=ddc:223*)
* [224 Prophetic books of Old Testament](https://openlibrary.org/search?q=ddc:224*)
* [225 New Testament](https://openlibrary.org/search?q=ddc:225*)
* [226 Gospels & Acts](https://openlibrary.org/search?q=ddc:226*)
* [227 Epistles](https://openlibrary.org/search?q=ddc:227*)
* [228 Revelation (Apocalypse)](https://openlibrary.org/search?q=ddc:228*)
* [229 Apocrypha, pseudepigrapha, & intertestamental works](https://openlibrary.org/search?q=ddc:229*)
### [230 Christianity](https://openlibrary.org/search?q=ddc:23*)
* [230 Christianity](https://openlibrary.org/search?q=ddc:230*)
* [231 God](https://openlibrary.org/search?q=ddc:231*)
* [232 Jesus Christ & his family](https://openlibrary.org/search?q=ddc:232*)
* [233 Humankind](https://openlibrary.org/search?q=ddc:233*)
* [234 Salvation & grace](https://openlibrary.org/search?q=ddc:234*)
* [235 Spiritual beings](https://openlibrary.org/search?q=ddc:235*)
* [236 Eschatology](https://openlibrary.org/search?q=ddc:236*)
* [237 No longer used—formerly Future state](https://openlibrary.org/search?q=ddc:237*)
* [238 Creeds, confessions of faith, covenants, & catechisms](https://openlibrary.org/search?q=ddc:238*)
* [239 Apologetics & polemics](https://openlibrary.org/search?q=ddc:239*)
### [240 Christian practice & observance](https://openlibrary.org/search?q=ddc:24*)
* [240 Christian moral and devotional theology](https://openlibrary.org/search?q=ddc:240*)
* [241 Christian ethics](https://openlibrary.org/search?q=ddc:241*)
* [242 Devotional literature](https://openlibrary.org/search?q=ddc:242*)
* [243 Evangelistic writings for individuals and families](https://openlibrary.org/search?q=ddc:243*)
* [244 No longer used—formerly Religious fiction](https://openlibrary.org/search?q=ddc:244*)
* [245 No longer used—formerly Hymnology](https://openlibrary.org/search?q=ddc:245*)
* [246 Use of art in Christianity](https://openlibrary.org/search?q=ddc:246*)
* [247 Church furnishings & related articles](https://openlibrary.org/search?q=ddc:247*)
* [248 Christian experience, practice, life](https://openlibrary.org/search?q=ddc:248*)
* [249 Christian observances in family life](https://openlibrary.org/search?q=ddc:249*)
### [250 Christian orders & local church](https://openlibrary.org/search?q=ddc:25*)
* [250 Local Christian church and Christian religious orders](https://openlibrary.org/search?q=ddc:250*)
* [251 Preaching (Homiletics)](https://openlibrary.org/search?q=ddc:251*)
* [252 Texts of sermons](https://openlibrary.org/search?q=ddc:252*)
* [253 Pastoral office and work (Pastoral theology)](https://openlibrary.org/search?q=ddc:253*)
* [254 Parish administration](https://openlibrary.org/search?q=ddc:254*)
* [255 Religious congregations & orders](https://openlibrary.org/search?q=ddc:255*)
* [256 No longer used—formerly Religious societies](https://openlibrary.org/search?q=ddc:256*)
* [257 No longer used—formerly Parochial schools, libraries, etc.](https://openlibrary.org/search?q=ddc:257*)
* [258 No longer used—formerly Parochial medicine](https://openlibrary.org/search?q=ddc:258*)
* [259 Pastoral care of families, of specific groups of people](https://openlibrary.org/search?q=ddc:259*)
### [260 Social & ecclesiastical theology](https://openlibrary.org/search?q=ddc:26*)
* [260 Christian social and ecclesiastical theology](https://openlibrary.org/search?q=ddc:260*)
* [261 Social theology and interreligious relations and attitudes](https://openlibrary.org/search?q=ddc:261*)
* [262 Ecclesiology](https://openlibrary.org/search?q=ddc:262*)
* [263 Days, times, places of religious observance](https://openlibrary.org/search?q=ddc:263*)
* [264 Public worship](https://openlibrary.org/search?q=ddc:264*)
* [265 Sacraments, other rites & acts](https://openlibrary.org/search?q=ddc:265*)
* [266 Missions](https://openlibrary.org/search?q=ddc:266*)
* [267 Associations for religious work](https://openlibrary.org/search?q=ddc:267*)
* [268 Religious education](https://openlibrary.org/search?q=ddc:268*)
* [269 Spiritual renewal](https://openlibrary.org/search?q=ddc:269*)
### [270 History of Christianity](https://openlibrary.org/search?q=ddc:27*)
* [270 History, geographic treatment, biography of Christianity](https://openlibrary.org/search?q=ddc:270*)
* [271 Religious congregations and orders in church history](https://openlibrary.org/search?q=ddc:271*)
* [272 Persecutions in church history](https://openlibrary.org/search?q=ddc:272*)
* [273 Doctrinal controversies and heresies in general church history](https://openlibrary.org/search?q=ddc:273*)
* [274 Christianity in Europe](https://openlibrary.org/search?q=ddc:274*)
* [275 Christianity in Asia](https://openlibrary.org/search?q=ddc:275*)
* [276 Christianity in Africa](https://openlibrary.org/search?q=ddc:276*)
* [277 Christianity in North America](https://openlibrary.org/search?q=ddc:277*)
* [278 Christianity in South America](https://openlibrary.org/search?q=ddc:278*)
* [279 History of Christianity in other areas](https://openlibrary.org/search?q=ddc:279*)
### [280 Christian denominations](https://openlibrary.org/search?q=ddc:28*)
* [280 Denominations and sects of Christian church](https://openlibrary.org/search?q=ddc:280*)
* [281 Early church & Eastern churches](https://openlibrary.org/search?q=ddc:281*)
* [282 Roman Catholic Church](https://openlibrary.org/search?q=ddc:282*)
* [283 Anglican churches](https://openlibrary.org/search?q=ddc:283*)
* [284 Protestant denominations of Continental origin & related body](https://openlibrary.org/search?q=ddc:284*)
* [285 Presbyterian churches, Reformed churches centered in America, Congregational churches](https://openlibrary.org/search?q=ddc:285*)
* [286 Baptist, Restoration Movement, Adventist churches](https://openlibrary.org/search?q=ddc:286*)
* [287 Methodist churches; churches related to Methodism](https://openlibrary.org/search?q=ddc:287*)
* [288 No longer used—formerly Unitarian](https://openlibrary.org/search?q=ddc:288*)
* [289 Other denominations & sects](https://openlibrary.org/search?q=ddc:289*)
### [290 Other religions](https://openlibrary.org/search?q=ddc:29*)
* [290 Other religions](https://openlibrary.org/search?q=ddc:290*)
* [291 No longer used—formerly Comparative religion](https://openlibrary.org/search?q=ddc:291*)
* [292 Classical religion (Greek & Roman religion)](https://openlibrary.org/search?q=ddc:292*)
* [293 Germanic religion](https://openlibrary.org/search?q=ddc:293*)
* [294 Religions of Indic origin](https://openlibrary.org/search?q=ddc:294*)
* [295 Zoroastrianism (Mazdaism, Parseeism)](https://openlibrary.org/search?q=ddc:295*)
* [296 Judaism](https://openlibrary.org/search?q=ddc:296*)
* [297 Islam, Bábism & Bahá'í Faith](https://openlibrary.org/search?q=ddc:297*)
* [298 No longer used—formerly Mormonism](https://openlibrary.org/search?q=ddc:298*)
* [299 Religions not provided for elsewhere](https://openlibrary.org/search?q=ddc:299*)

<a name="class-300"></a>

## [Class 300 – Social sciences](https://openlibrary.org/search?q=ddc:3*)

### [300 Social sciences, sociology & anthropology](https://openlibrary.org/search?q=ddc:30*)
* [300 Social sciences](https://openlibrary.org/search?q=ddc:300*)
* [301 Sociology & anthropology](https://openlibrary.org/search?q=ddc:301*)
* [302 Social interaction](https://openlibrary.org/search?q=ddc:302*)
* [303 Social processes](https://openlibrary.org/search?q=ddc:303*)
* [304 Factors affecting social behavior](https://openlibrary.org/search?q=ddc:304*)
* [305 Groups of people](https://openlibrary.org/search?q=ddc:305*)
* [306 Culture & institutions](https://openlibrary.org/search?q=ddc:306*)
* [307 Communities](https://openlibrary.org/search?q=ddc:307*)
* [308 No longer used—formerly Polygraphy](https://openlibrary.org/search?q=ddc:308*)
* [309 No longer used—formerly History of sociology](https://openlibrary.org/search?q=ddc:309*)
### [310 Statistics](https://openlibrary.org/search?q=ddc:31*)
* [310 Collections of general statistics](https://openlibrary.org/search?q=ddc:310*)
* [311 No longer used—formerly Theory and methods](https://openlibrary.org/search?q=ddc:311*)
* [312 No longer used—formerly Population](https://openlibrary.org/search?q=ddc:312*)
* [313 No longer used—formerly Special topics](https://openlibrary.org/search?q=ddc:313*)
* [314 General statistics of Europe](https://openlibrary.org/search?q=ddc:314*)
* [315 General statistics of Asia](https://openlibrary.org/search?q=ddc:315*)
* [316 General statistics of Africa](https://openlibrary.org/search?q=ddc:316*)
* [317 General statistics of North America](https://openlibrary.org/search?q=ddc:317*)
* [318 General statistics of South America](https://openlibrary.org/search?q=ddc:318*)
* [319 General statistics of Australasia, Pacific Ocean islands, Atlantic Ocean islands, Arctic islands, Antarctica](https://openlibrary.org/search?q=ddc:319*)
### [320 Political science](https://openlibrary.org/search?q=ddc:32*)
* [320 Political science (Politics & government)](https://openlibrary.org/search?q=ddc:320*)
* [321 Systems of governments & states](https://openlibrary.org/search?q=ddc:321*)
* [322 Relation of state to organized groups & their members](https://openlibrary.org/search?q=ddc:322*)
* [323 Civil & political rights](https://openlibrary.org/search?q=ddc:323*)
* [324 The political process](https://openlibrary.org/search?q=ddc:324*)
* [325 International migration & colonization](https://openlibrary.org/search?q=ddc:325*)
* [326 Slavery & emancipation](https://openlibrary.org/search?q=ddc:326*)
* [327 International relations](https://openlibrary.org/search?q=ddc:327*)
* [328 The legislative process](https://openlibrary.org/search?q=ddc:328*)
* [329 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:329*)
### [330 Economics](https://openlibrary.org/search?q=ddc:33*)
* [330 Economics](https://openlibrary.org/search?q=ddc:330*)
* [331 Labor economics](https://openlibrary.org/search?q=ddc:331*)
* [332 Financial economics](https://openlibrary.org/search?q=ddc:332*)
* [333 Economics of land & energy](https://openlibrary.org/search?q=ddc:333*)
* [334 Cooperatives](https://openlibrary.org/search?q=ddc:334*)
* [335 Socialism & related systems](https://openlibrary.org/search?q=ddc:335*)
* [336 Public finance](https://openlibrary.org/search?q=ddc:336*)
* [337 International economics](https://openlibrary.org/search?q=ddc:337*)
* [338 Production](https://openlibrary.org/search?q=ddc:338*)
* [339 Macroeconomics & related topics](https://openlibrary.org/search?q=ddc:339*)
### [340 Law](https://openlibrary.org/search?q=ddc:34*)
* [340 Law](https://openlibrary.org/search?q=ddc:340*)
* [341 Law of nations](https://openlibrary.org/search?q=ddc:341*)
* [342 Constitutional & administrative law](https://openlibrary.org/search?q=ddc:342*)
* [343 Military, defense, public property, public finance, tax, commerce (trade), industrial law](https://openlibrary.org/search?q=ddc:343*)
* [344 Labor, social service, education, cultural law](https://openlibrary.org/search?q=ddc:344*)
* [345 Criminal law](https://openlibrary.org/search?q=ddc:345*)
* [346 Private law](https://openlibrary.org/search?q=ddc:346*)
* [347 Procedure & courts](https://openlibrary.org/search?q=ddc:347*)
* [348 Laws, regulations, cases](https://openlibrary.org/search?q=ddc:348*)
* [349 Law of specific jurisdictions, areas, socioeconomic regions, regional intergovernmental organizations](https://openlibrary.org/search?q=ddc:349*)
### [350 Public administration & military science](https://openlibrary.org/search?q=ddc:35*)
* [350 Public administration & military science](https://openlibrary.org/search?q=ddc:350*)
* [351 Public administration](https://openlibrary.org/search?q=ddc:351*)
* [352 General considerations of public administration](https://openlibrary.org/search?q=ddc:352*)
* [353 Specific fields of public administration](https://openlibrary.org/search?q=ddc:353*)
* [354 Public administration of economy & environment](https://openlibrary.org/search?q=ddc:354*)
* [355 Military science](https://openlibrary.org/search?q=ddc:355*)
* [356 Foot forces & warfare](https://openlibrary.org/search?q=ddc:356*)
* [357 Mounted forces & warfare](https://openlibrary.org/search?q=ddc:357*)
* [358 Air & other specialized forces & warfare; engineering & related services](https://openlibrary.org/search?q=ddc:358*)
* [359 Sea forces & warfare](https://openlibrary.org/search?q=ddc:359*)
### [360 Social problems & social services](https://openlibrary.org/search?q=ddc:36*)
* [360 Social problems & services; associations](https://openlibrary.org/search?q=ddc:360*)
* [361 Social problems & services](https://openlibrary.org/search?q=ddc:361*)
* [362 Social problems of & services to groups of people](https://openlibrary.org/search?q=ddc:362*)
* [363 Other social problems & services](https://openlibrary.org/search?q=ddc:363*)
* [364 Criminology](https://openlibrary.org/search?q=ddc:364*)
* [365 Penal & related institutions](https://openlibrary.org/search?q=ddc:365*)
* [366 Secret associations & societies](https://openlibrary.org/search?q=ddc:366*)
* [367 General clubs](https://openlibrary.org/search?q=ddc:367*)
* [368 Insurance](https://openlibrary.org/search?q=ddc:368*)
* [369 Associations](https://openlibrary.org/search?q=ddc:369*)
### [370 Education](https://openlibrary.org/search?q=ddc:37*)
* [370 Education](https://openlibrary.org/search?q=ddc:370*)
* [371 Schools & their activities; special education](https://openlibrary.org/search?q=ddc:371*)
* [372 Primary education (elementary education)](https://openlibrary.org/search?q=ddc:372*)
* [373 Secondary education](https://openlibrary.org/search?q=ddc:373*)
* [374 Adult education](https://openlibrary.org/search?q=ddc:374*)
* [375 Curricula](https://openlibrary.org/search?q=ddc:375*)
* [376 No longer used—formerly Education of women](https://openlibrary.org/search?q=ddc:376*)
* [377 No longer used—formerly Ethical education](https://openlibrary.org/search?q=ddc:377*)
* [378 Higher education (Tertiary education)](https://openlibrary.org/search?q=ddc:378*)
* [379 Public policy issues in education](https://openlibrary.org/search?q=ddc:379*)
### [380 Commerce, communications, & transportation](https://openlibrary.org/search?q=ddc:38*)
* [380 Commerce, communications, transportation](https://openlibrary.org/search?q=ddc:380*)
* [381 Commerce (Trade)](https://openlibrary.org/search?q=ddc:381*)
* [382 International commerce (Foreign trade)](https://openlibrary.org/search?q=ddc:382*)
* [383 Postal communication](https://openlibrary.org/search?q=ddc:383*)
* [384 Communications](https://openlibrary.org/search?q=ddc:384*)
* [385 Railroad transportation](https://openlibrary.org/search?q=ddc:385*)
* [386 Inland waterway & ferry transportation](https://openlibrary.org/search?q=ddc:386*)
* [387 Water, air, space transportation](https://openlibrary.org/search?q=ddc:387*)
* [388 Transportation](https://openlibrary.org/search?q=ddc:388*)
* [389 Metrology & standardization](https://openlibrary.org/search?q=ddc:389*)
### [390 Customs, etiquette, & folklore](https://openlibrary.org/search?q=ddc:39*)
* [390 Customs, etiquette, folklore](https://openlibrary.org/search?q=ddc:390*)
* [391 Costume & personal appearance](https://openlibrary.org/search?q=ddc:391*)
* [392 Customs of life cycle & domestic life](https://openlibrary.org/search?q=ddc:392*)
* [393 Death customs](https://openlibrary.org/search?q=ddc:393*)
* [394 General customs](https://openlibrary.org/search?q=ddc:394*)
* [395 Etiquette (Manners)](https://openlibrary.org/search?q=ddc:395*)
* [396 No longer used—formerly Women's position and treatment](https://openlibrary.org/search?q=ddc:396*)
* [397 No longer used—formerly outcast studies](https://openlibrary.org/search?q=ddc:397*)
* [398 Folklore](https://openlibrary.org/search?q=ddc:398*)
* [399 Customs of war & diplomacy](https://openlibrary.org/search?q=ddc:399*)

<a name="class-400"></a>

## [Class 400 – Language](https://openlibrary.org/search?q=ddc:4*)

### [400 Language](https://openlibrary.org/search?q=ddc:40*)
* [400 Language](https://openlibrary.org/search?q=ddc:400*)
* [401 Philosophy & theory; international languages](https://openlibrary.org/search?q=ddc:401*)
* [402 Miscellany](https://openlibrary.org/search?q=ddc:402*)
* [403 Dictionaries, encyclopedias, concordances](https://openlibrary.org/search?q=ddc:403*)
* [404 Special topics of language](https://openlibrary.org/search?q=ddc:404*)
* [405 Serial publications](https://openlibrary.org/search?q=ddc:405*)
* [406 Organizations & management](https://openlibrary.org/search?q=ddc:406*)
* [407 Education, research, related topics](https://openlibrary.org/search?q=ddc:407*)
* [408 Groups of people](https://openlibrary.org/search?q=ddc:408*)
* [409 Geographic treatment & biography](https://openlibrary.org/search?q=ddc:409*)
### [410 Linguistics](https://openlibrary.org/search?q=ddc:41*)
* [410 Linguistics](https://openlibrary.org/search?q=ddc:410*)
* [411 Writing systems of standard forms of languages](https://openlibrary.org/search?q=ddc:411*)
* [412 Etymology of standard forms of languages](https://openlibrary.org/search?q=ddc:412*)
* [413 Dictionaries of standard forms of languages](https://openlibrary.org/search?q=ddc:413*)
* [414 Phonology & phonetics of standard forms of languages](https://openlibrary.org/search?q=ddc:414*)
* [415 Grammar of standard forms of languages](https://openlibrary.org/search?q=ddc:415*)
* [416 No longer used—formerly Prosody](https://openlibrary.org/search?q=ddc:416*)
* [417 Dialectology & historical linguistics](https://openlibrary.org/search?q=ddc:417*)
* [418 Standard usage (Prescriptive linguistics)](https://openlibrary.org/search?q=ddc:418*)
* [419 Sign languages](https://openlibrary.org/search?q=ddc:419*)
### [420 English & Old English languages](https://openlibrary.org/search?q=ddc:42*)
* [420 English & Old English (Anglo-Saxon)](https://openlibrary.org/search?q=ddc:420*)
* [421 Writing system, phonology, phonetics of standard English](https://openlibrary.org/search?q=ddc:421*)
* [422 Etymology of standard English](https://openlibrary.org/search?q=ddc:422*)
* [423 Dictionaries of standard English](https://openlibrary.org/search?q=ddc:423*)
* [424 No longer used—formerly English thesauruses](https://openlibrary.org/search?q=ddc:424*)
* [425 Grammar of standard English](https://openlibrary.org/search?q=ddc:425*)
* [426 No longer used—formerly English prosodies](https://openlibrary.org/search?q=ddc:426*)
* [427 Historical & geographical variations, modern nongeographic variations of English](https://openlibrary.org/search?q=ddc:427*)
* [428 Standard English usage (Prescriptive linguistics)](https://openlibrary.org/search?q=ddc:428*)
* [429 Old English (Anglo-Saxon)](https://openlibrary.org/search?q=ddc:429*)
### [430 German & related languages](https://openlibrary.org/search?q=ddc:43*)
* [430 German and related languages](https://openlibrary.org/search?q=ddc:430*)
* [431 Writing systems, phonology, phonetics of standard German](https://openlibrary.org/search?q=ddc:431*)
* [432 Etymology of standard German](https://openlibrary.org/search?q=ddc:432*)
* [433 Dictionaries of standard German](https://openlibrary.org/search?q=ddc:433*)
* [434 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:434*)
* [435 Grammar of standard German](https://openlibrary.org/search?q=ddc:435*)
* [436 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:436*)
* [437 Historical & geographic variations, modern nongeographic variations of German](https://openlibrary.org/search?q=ddc:437*)
* [438 Standard German usage (Prescriptive linguistics)](https://openlibrary.org/search?q=ddc:438*)
* [439 Other Germanic languages](https://openlibrary.org/search?q=ddc:439*)
### [440 French & related languages](https://openlibrary.org/search?q=ddc:44*)
* [440 French & related Romance languages](https://openlibrary.org/search?q=ddc:440*)
* [441 Writing systems, phonology, phonetics of standard French](https://openlibrary.org/search?q=ddc:441*)
* [442 Etymology of standard French](https://openlibrary.org/search?q=ddc:442*)
* [443 Dictionaries of standard French](https://openlibrary.org/search?q=ddc:443*)
* [444 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:444*)
* [445 Grammar of standard French](https://openlibrary.org/search?q=ddc:445*)
* [446 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:446*)
* [447 Historical and geographic variations, modern nongeographic variations of French](https://openlibrary.org/search?q=ddc:447*)
* [448 Standard French usage (Prescriptive linguistics)](https://openlibrary.org/search?q=ddc:448*)
* [449 Occitan Catalan, Franco-Provençal](https://openlibrary.org/search?q=ddc:449*)
### [450 Italian, Romanian, & related languages](https://openlibrary.org/search?q=ddc:45*)
* [450 Italian, Dalmatian, Romanian, Rhaetian, Sardinian, Corsican](https://openlibrary.org/search?q=ddc:450*)
* [451 Writing systems, phonology, phonetics of standard Italian](https://openlibrary.org/search?q=ddc:451*)
* [452 Etymology of standard Italian](https://openlibrary.org/search?q=ddc:452*)
* [453 Dictionaries of standard Italian](https://openlibrary.org/search?q=ddc:453*)
* [454 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:454*)
* [455 Grammar of standard Italian](https://openlibrary.org/search?q=ddc:455*)
* [456 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:456*)
* [457 Historical & geographic variations, modern nongeographic variations of Italian](https://openlibrary.org/search?q=ddc:457*)
* [458 Standard Italian usage (Prescriptive linguistics)](https://openlibrary.org/search?q=ddc:458*)
* [459 Romanian, Rhaetian, Sardinian, Corsican](https://openlibrary.org/search?q=ddc:459*)
### [460 Spanish, Portuguese, Galician](https://openlibrary.org/search?q=ddc:46*)
* [460 Spanish, Portuguese, Galician](https://openlibrary.org/search?q=ddc:460*)
* [461 Writing systems, phonology, phonetics of standard Spanish](https://openlibrary.org/search?q=ddc:461*)
* [462 Etymology of standard Spanish](https://openlibrary.org/search?q=ddc:462*)
* [463 Dictionaries of standard Spanish](https://openlibrary.org/search?q=ddc:463*)
* [464 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:464*)
* [465 Grammar of standard Spanish](https://openlibrary.org/search?q=ddc:465*)
* [466 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:466*)
* [467 Historical & geographic variations, modern nongeographic variations of Spanish](https://openlibrary.org/search?q=ddc:467*)
* [468 Standard Spanish usage (Prescriptive linguistics)](https://openlibrary.org/search?q=ddc:468*)
* [469 Portuguese](https://openlibrary.org/search?q=ddc:469*)
### [470 Latin & Italic languages](https://openlibrary.org/search?q=ddc:47*)
* [470 Latin & related Italic languages](https://openlibrary.org/search?q=ddc:470*)
* [471 Writing systems, phonology, phonetics of classical Latin](https://openlibrary.org/search?q=ddc:471*)
* [472 Etymology of classical Latin](https://openlibrary.org/search?q=ddc:472*)
* [473 Dictionaries of classical Latin](https://openlibrary.org/search?q=ddc:473*)
* [474 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:474*)
* [475 Grammar of classical Latin](https://openlibrary.org/search?q=ddc:475*)
* [476 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:476*)
* [477 Old, postclassical, Vulgar Latin](https://openlibrary.org/search?q=ddc:477*)
* [478 Classical Latin usage (Prescriptive linguistics)](https://openlibrary.org/search?q=ddc:478*)
* [479 Other Italic languages](https://openlibrary.org/search?q=ddc:479*)
### [480 Classical & modern Greek languages](https://openlibrary.org/search?q=ddc:48*)
* [480 Classical Greek & related Hellenic languages](https://openlibrary.org/search?q=ddc:480*)
* [481 Writing systems, phonology, phonetics of classical Greek](https://openlibrary.org/search?q=ddc:481*)
* [482 Etymology of classical Greek](https://openlibrary.org/search?q=ddc:482*)
* [483 Dictionaries of classical Greek](https://openlibrary.org/search?q=ddc:483*)
* [484 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:484*)
* [485 Grammar of classical Greek](https://openlibrary.org/search?q=ddc:485*)
* [486 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:486*)
* [487 Preclassical & postclassical Greek](https://openlibrary.org/search?q=ddc:487*)
* [488 Classical Greek usage (Prescriptive linguistics)](https://openlibrary.org/search?q=ddc:488*)
* [489 Other Hellenic languages](https://openlibrary.org/search?q=ddc:489*)
### [490 Other languages](https://openlibrary.org/search?q=ddc:49*)
* [490 Other languages](https://openlibrary.org/search?q=ddc:490*)
* [491 East Indo-European & Celtic languages](https://openlibrary.org/search?q=ddc:491*)
* [492 Afro-Asiatic languages](https://openlibrary.org/search?q=ddc:492*)
* [493 Non-Semitic Afro-Asiatic languages](https://openlibrary.org/search?q=ddc:493*)
* [494 Altic, Uralic, Hyperborean, Dravidian languages, miscellaneous languages of south Asia](https://openlibrary.org/search?q=ddc:494*)
* [495 Languages of East & Southeast Asia](https://openlibrary.org/search?q=ddc:495*)
* [496 African languages](https://openlibrary.org/search?q=ddc:496*)
* [497 North American native languages](https://openlibrary.org/search?q=ddc:497*)
* [498 South American native languages](https://openlibrary.org/search?q=ddc:498*)
* [499 Non-Austronesian languages of Oceania, Austronesian languages, miscellaneous languages](https://openlibrary.org/search?q=ddc:499*)

<a name="class-500"></a>

## [Class 500 – Science](https://openlibrary.org/search?q=ddc:5*)

### [500 Science](https://openlibrary.org/search?q=ddc:50*)
* [500 Natural sciences & mathematics](https://openlibrary.org/search?q=ddc:500*)
* [501 Philosophy & theory](https://openlibrary.org/search?q=ddc:501*)
* [502 Miscellany](https://openlibrary.org/search?q=ddc:502*)
* [503 Dictionaries, encyclopedias, concordances](https://openlibrary.org/search?q=ddc:503*)
* [504 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:504*)
* [505 Serial publications](https://openlibrary.org/search?q=ddc:505*)
* [506 Organizations & management](https://openlibrary.org/search?q=ddc:506*)
* [507 Education, research, related topics](https://openlibrary.org/search?q=ddc:507*)
* [508 Natural history](https://openlibrary.org/search?q=ddc:508*)
* [509 History, geographic treatment, biography](https://openlibrary.org/search?q=ddc:509*)
### [510 Mathematics](https://openlibrary.org/search?q=ddc:51*)
* [510 Mathematics](https://openlibrary.org/search?q=ddc:510*)
* [511 General principles of mathematics](https://openlibrary.org/search?q=ddc:511*)
* [512 Algebra](https://openlibrary.org/search?q=ddc:512*)
* [513 Arithmetic](https://openlibrary.org/search?q=ddc:513*)
* [514 Topology](https://openlibrary.org/search?q=ddc:514*)
* [515 Analysis](https://openlibrary.org/search?q=ddc:515*)
* [516 Geometry](https://openlibrary.org/search?q=ddc:516*)
* [517 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:517*)
* [518 Numerical analysis](https://openlibrary.org/search?q=ddc:518*)
* [519 Probabilities & applied mathematics](https://openlibrary.org/search?q=ddc:519*)
### [520 Astronomy](https://openlibrary.org/search?q=ddc:52*)
* [520 Astronomy & allied sciences](https://openlibrary.org/search?q=ddc:520*)
* [521 Celestial mechanics](https://openlibrary.org/search?q=ddc:521*)
* [522 Techniques, procedures, apparatus, equipment, materials](https://openlibrary.org/search?q=ddc:522*)
* [523 Specific celestial bodies & phenomena](https://openlibrary.org/search?q=ddc:523*)
* [524 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:524*)
* [525 Earth (Astronomical geography)](https://openlibrary.org/search?q=ddc:525*)
* [526 Mathematical geography](https://openlibrary.org/search?q=ddc:526*)
* [527 Celestial navigation](https://openlibrary.org/search?q=ddc:527*)
* [528 Ephemerides](https://openlibrary.org/search?q=ddc:528*)
* [529 Chronology](https://openlibrary.org/search?q=ddc:529*)
### [530 Physics](https://openlibrary.org/search?q=ddc:53*)
* [530 Physics](https://openlibrary.org/search?q=ddc:530*)
* [531 Classical mechanics](https://openlibrary.org/search?q=ddc:531*)
* [532 Fluid mechanics](https://openlibrary.org/search?q=ddc:532*)
* [533 Pneumatics (Gas mechanics)](https://openlibrary.org/search?q=ddc:533*)
* [534 Sound & related vibrations](https://openlibrary.org/search?q=ddc:534*)
* [535 Light & related radiation](https://openlibrary.org/search?q=ddc:535*)
* [536 Heat](https://openlibrary.org/search?q=ddc:536*)
* [537 Electricity & electronics](https://openlibrary.org/search?q=ddc:537*)
* [538 Magnetism](https://openlibrary.org/search?q=ddc:538*)
* [539 Modern physics](https://openlibrary.org/search?q=ddc:539*)
### [540 Chemistry](https://openlibrary.org/search?q=ddc:54*)
* [540 Chemistry & allied sciences](https://openlibrary.org/search?q=ddc:540*)
* [541 Physical chemistry](https://openlibrary.org/search?q=ddc:541*)
* [542 Techniques, procedures, apparatus, equipment, materials](https://openlibrary.org/search?q=ddc:542*)
* [543 Analytical chemistry](https://openlibrary.org/search?q=ddc:543*)
* [544 No longer used—formerly Qualitative analysis](https://openlibrary.org/search?q=ddc:544*)
* [545 No longer used—formerly Quantitative analysis](https://openlibrary.org/search?q=ddc:545*)
* [546 Inorganic chemistry](https://openlibrary.org/search?q=ddc:546*)
* [547 Organic chemistry](https://openlibrary.org/search?q=ddc:547*)
* [548 Crystallography](https://openlibrary.org/search?q=ddc:548*)
* [549 Mineralogy](https://openlibrary.org/search?q=ddc:549*)
### [550 Earth sciences & geology](https://openlibrary.org/search?q=ddc:55*)
* [550 Earth sciences](https://openlibrary.org/search?q=ddc:550*)
* [551 Geology, hydrology, meteorology](https://openlibrary.org/search?q=ddc:551*)
* [552 Petrology](https://openlibrary.org/search?q=ddc:552*)
* [553 Economic geology](https://openlibrary.org/search?q=ddc:553*)
* [554 Earth sciences of Europe](https://openlibrary.org/search?q=ddc:554*)
* [555 Earth sciences of Asia](https://openlibrary.org/search?q=ddc:555*)
* [556 Earth sciences of Africa](https://openlibrary.org/search?q=ddc:556*)
* [557 Earth sciences of North America](https://openlibrary.org/search?q=ddc:557*)
* [558 Earth sciences of South America](https://openlibrary.org/search?q=ddc:558*)
* [559 Earth sciences of Australasia, Pacific Ocean islands, Atlantic Ocean islands, Arctic islands, Antarctica, extraterrestrial worlds](https://openlibrary.org/search?q=ddc:559*)
### [560 Fossils & prehistoric life](https://openlibrary.org/search?q=ddc:56*)
* [560 Paleontology](https://openlibrary.org/search?q=ddc:560*)
* [561 Paleobotany; fossil microorganisms](https://openlibrary.org/search?q=ddc:561*)
* [562 Fossil invertebrates](https://openlibrary.org/search?q=ddc:562*)
* [563 Miscellaneous fossil marine & seashore invertebrates](https://openlibrary.org/search?q=ddc:563*)
* [564 Fossil Mollusca & Molluscoidea](https://openlibrary.org/search?q=ddc:564*)
* [565 Fossil Arthropoda](https://openlibrary.org/search?q=ddc:565*)
* [566 Fossil Chordata](https://openlibrary.org/search?q=ddc:566*)
* [567 Fossil cold-blooded vertebrates](https://openlibrary.org/search?q=ddc:567*)
* [568 Fossil Aves (birds)](https://openlibrary.org/search?q=ddc:568*)
* [569 Fossil Mammalia](https://openlibrary.org/search?q=ddc:569*)
### [570 Biology](https://openlibrary.org/search?q=ddc:57*)
* [570 Biology](https://openlibrary.org/search?q=ddc:570*)
* [571 Physiology & related subjects](https://openlibrary.org/search?q=ddc:571*)
* [572 Biochemistry](https://openlibrary.org/search?q=ddc:572*)
* [573 Specific physiological systems in animals, regional histology & physiology in animals](https://openlibrary.org/search?q=ddc:573*)
* [574 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:574*)
* [575 Specific parts of & physiological systems in plants](https://openlibrary.org/search?q=ddc:575*)
* [576 Genetics and evolution](https://openlibrary.org/search?q=ddc:576*)
* [577 Ecology](https://openlibrary.org/search?q=ddc:577*)
* [578 Natural history of organisms & related subjects](https://openlibrary.org/search?q=ddc:578*)
* [579 Natural history of microorganisms, fungi, algae](https://openlibrary.org/search?q=ddc:579*)
### [580 Plants](https://openlibrary.org/search?q=ddc:58*)
* [580 Plants](https://openlibrary.org/search?q=ddc:580*)
* [581 Specific topics in natural history of plants](https://openlibrary.org/search?q=ddc:581*)
* [582 Plants noted for specific vegetative characteristics and flowers](https://openlibrary.org/search?q=ddc:582*)
* [583 Magnoliopsida (Dicotyledones)](https://openlibrary.org/search?q=ddc:583*)
* [584 Liliopsida (Monocotyledones)](https://openlibrary.org/search?q=ddc:584*)
* [585 Pinophyta (Gymnosperms)](https://openlibrary.org/search?q=ddc:585*)
* [586 Cryptogamia (Seedless plants)](https://openlibrary.org/search?q=ddc:586*)
* [587 Pteridophyta](https://openlibrary.org/search?q=ddc:587*)
* [588 Bryophyta](https://openlibrary.org/search?q=ddc:588*)
* [589 No longer used—formerly Forestry ](https://openlibrary.org/search?q=ddc:589*)
### [590 Animals (Zoology)](https://openlibrary.org/search?q=ddc:59*)
* [590 Animals](https://openlibrary.org/search?q=ddc:590*)
* [591 Specific topics in natural history of animals](https://openlibrary.org/search?q=ddc:591*)
* [592 Invertebrates](https://openlibrary.org/search?q=ddc:592*)
* [593 Miscellaneous marine & seashore invertebrates](https://openlibrary.org/search?q=ddc:593*)
* [594 Mollusca & Molluscoidea](https://openlibrary.org/search?q=ddc:594*)
* [595 Arthropoda](https://openlibrary.org/search?q=ddc:595*)
* [596 Chordata](https://openlibrary.org/search?q=ddc:596*)
* [597 Cold-blooded vertebrates](https://openlibrary.org/search?q=ddc:597*)
* [598 Aves (Birds)](https://openlibrary.org/search?q=ddc:598*)
* [599 Mammalia (Mammals)](https://openlibrary.org/search?q=ddc:599*)

<a name="class-600"></a>

## [Class 600 – Technology](https://openlibrary.org/search?q=ddc:6*)

### [600 Technology](https://openlibrary.org/search?q=ddc:60*)
* [600 Technology (Applied sciences)](https://openlibrary.org/search?q=ddc:600*)
* [601 Philosophy & theory](https://openlibrary.org/search?q=ddc:601*)
* [602 Miscellany](https://openlibrary.org/search?q=ddc:602*)
* [603 Dictionaries, encyclopedias, concordances](https://openlibrary.org/search?q=ddc:603*)
* [604 Technical drawing, hazardous materials technology; groups of people](https://openlibrary.org/search?q=ddc:604*)
* [605 Serial publications](https://openlibrary.org/search?q=ddc:605*)
* [606 Organizations](https://openlibrary.org/search?q=ddc:606*)
* [607 Education, research, related topics](https://openlibrary.org/search?q=ddc:607*)
* [608 Patents](https://openlibrary.org/search?q=ddc:608*)
* [609 History, geographic treatment, biography](https://openlibrary.org/search?q=ddc:609*)
### [610 Medicine & health](https://openlibrary.org/search?q=ddc:61*)
* [610 Medicine & health](https://openlibrary.org/search?q=ddc:610*)
* [610.3 Medical encyclopedias](https://openlibrary.org/search?q=ddc:610.3*)
* [610.6 Medical organizations & professions](https://openlibrary.org/search?q=ddc:610.6*)
* [610.72 Medical research](https://openlibrary.org/search?q=ddc:610.72*)
* [610.9 Geography and history of medicine](https://openlibrary.org/search?q=ddc:610.9*)
* [611 Human anatomy, cytology, histology](https://openlibrary.org/search?q=ddc:611*)
* [611.2 Respiratory (lung, respiratory system)](https://openlibrary.org/search?q=ddc:611.2*)
* [611.3 Gastrointestinal (dental anatomy)](https://openlibrary.org/search?q=ddc:611.3*)
* [611.6 Genitourinary (genital system)](https://openlibrary.org/search?q=ddc:611.6*)
* [611.7 Musculoskeletal (seed coat)](https://openlibrary.org/search?q=ddc:611.7*)
* [611.8 Anatomy of the sense organs and nervous system](https://openlibrary.org/search?q=ddc:611.8*)
* [611.82 Anatomy of the brain](https://openlibrary.org/search?q=ddc:611.82*)
* [611.9 Topographic anatomy (back)](https://openlibrary.org/search?q=ddc:611.9*)
* [612 Human physiology](https://openlibrary.org/search?q=ddc:612*)
* [613 Personal health & safety](https://openlibrary.org/search?q=ddc:613*)
* [613.023 Professions hygiene and health](https://openlibrary.org/search?q=ddc:613.023*)
* [613.1 Role of the natural environment](https://openlibrary.org/search?q=ddc:613.1*)
* [613.2 Diet (food hygiene, nutrition, diet, nutritional value of food and beverages)](https://openlibrary.org/search?q=ddc:613.2*)
* [613.4 Cleanliness Care (hygiene and personal cleanliness, personal care)](https://openlibrary.org/search?q=ddc:613.4*)
* [613.5 Role of unnatural environment (housing, housing, temperature)](https://openlibrary.org/search?q=ddc:613.5*)
* [613.6](https://openlibrary.org/search?q=ddc:613.6*)
* [613.62 Hygiene in the business (industrial hygiene)](https://openlibrary.org/search?q=ddc:613.62*)
* [613.66 Self Defense](https://openlibrary.org/search?q=ddc:613.66*)
* [613.7 Condition physique (bodybuilding, fitness, forme physique)[4]](https://openlibrary.org/search?q=ddc:613.7*)
* [613.7046 Hatha yoga, yoga physique[5]](https://openlibrary.org/search?q=ddc:613.7046*)
* [613.71 Exercising, sports (aerobics, sauna, appearance surveillance and physical form)[6]](https://openlibrary.org/search?q=ddc:613.71*)
* [613.79 Relaxation, sleep[7]](https://openlibrary.org/search?q=ddc:613.79*)
* [614 Forensic medicine; incidence of injuries, wounds, disease; public preventive medicine](https://openlibrary.org/search?q=ddc:614*)
* [615 Pharmacology and therapeutics](https://openlibrary.org/search?q=ddc:615*)
* [616 Diseases](https://openlibrary.org/search?q=ddc:616*)
* [617 Surgery, regional medicine, dentistry, ophthalmology, otology, audiology](https://openlibrary.org/search?q=ddc:617*)
* [618 Gynecology, obstetrics, pediatrics, geriatrics](https://openlibrary.org/search?q=ddc:618*)
* [619 No longer used—formerly Experimental medicine](https://openlibrary.org/search?q=ddc:619*)
### [620 Engineering](https://openlibrary.org/search?q=ddc:62*)
* [620 Engineering & Applied operations](https://openlibrary.org/search?q=ddc:620*)
* [621 Applied physics](https://openlibrary.org/search?q=ddc:621*)
* [622 Mining & related operations](https://openlibrary.org/search?q=ddc:622*)
* [623 Military & nautical engineering](https://openlibrary.org/search?q=ddc:623*)
* [624 Civil engineering](https://openlibrary.org/search?q=ddc:624*)
* [625 Engineering of railroads, roads](https://openlibrary.org/search?q=ddc:625*)
* [626 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:626*)
* [627 Hydraulic engineering](https://openlibrary.org/search?q=ddc:627*)
* [628 Sanitary engineering](https://openlibrary.org/search?q=ddc:628*)
* [629 Other branches of engineering](https://openlibrary.org/search?q=ddc:629*)
### [630 Agriculture](https://openlibrary.org/search?q=ddc:63*)
* [630 Agriculture & related technologies](https://openlibrary.org/search?q=ddc:630*)
* [631 Specific techniques; apparatus, equipment, materials](https://openlibrary.org/search?q=ddc:631*)
* [632 Plant injuries, diseases, pests](https://openlibrary.org/search?q=ddc:632*)
* [633 Field & plantation crops](https://openlibrary.org/search?q=ddc:633*)
* [634 Orchards, fruits, forestry](https://openlibrary.org/search?q=ddc:634*)
* [635 Garden crops (Horticulture)](https://openlibrary.org/search?q=ddc:635*)
* [636 Animal husbandry](https://openlibrary.org/search?q=ddc:636*)
* [637 Processing dairy & related products](https://openlibrary.org/search?q=ddc:637*)
* [638 Insect culture](https://openlibrary.org/search?q=ddc:638*)
* [639 Hunting, fishing, conservation, related technologies](https://openlibrary.org/search?q=ddc:639*)
### [640 Home & family management](https://openlibrary.org/search?q=ddc:64*)
* [640 Home & family management](https://openlibrary.org/search?q=ddc:640*)
* [641 Food & drink](https://openlibrary.org/search?q=ddc:641*)
* [642 Meals & table service](https://openlibrary.org/search?q=ddc:642*)
* [643 Housing & household equipment](https://openlibrary.org/search?q=ddc:643*)
* [644 Household utilities](https://openlibrary.org/search?q=ddc:644*)
* [645 Household furnishings](https://openlibrary.org/search?q=ddc:645*)
* [646 Sewing, clothing, management of personal and family life](https://openlibrary.org/search?q=ddc:646*)
* [647 Management of public households (Institutional housekeeping)](https://openlibrary.org/search?q=ddc:647*)
* [648 Housekeeping](https://openlibrary.org/search?q=ddc:648*)
* [649 Child rearing; home care of people with disabilities & illnesses](https://openlibrary.org/search?q=ddc:649*)
### [650 Management & public relations](https://openlibrary.org/search?q=ddc:65*)
* [650 Management & auxiliary services](https://openlibrary.org/search?q=ddc:650*)
* [651 Office services](https://openlibrary.org/search?q=ddc:651*)
* [652 Processes of written communication](https://openlibrary.org/search?q=ddc:652*)
* [653 Shorthand](https://openlibrary.org/search?q=ddc:653*)
* [654–656 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:[654 TO 656])
* [657 Accounting](https://openlibrary.org/search?q=ddc:657*)
* [658 General management](https://openlibrary.org/search?q=ddc:658*)
* [659 Advertising & public relations](https://openlibrary.org/search?q=ddc:659*)
### [660 Chemical engineering](https://openlibrary.org/search?q=ddc:66*)
* [660 Chemical engineering & related technologies](https://openlibrary.org/search?q=ddc:660*)
* [661 Technology of industrial chemicals](https://openlibrary.org/search?q=ddc:661*)
* [662 Technology of explosives, fuels, related products](https://openlibrary.org/search?q=ddc:662*)
* [663 Beverage technology](https://openlibrary.org/search?q=ddc:663*)
* [664 Food technology](https://openlibrary.org/search?q=ddc:664*)
* [665 Technology of industrial oils, fats, waxes, gases](https://openlibrary.org/search?q=ddc:665*)
* [666 Ceramic & allied technologies](https://openlibrary.org/search?q=ddc:666*)
* [667 Cleaning, color, coating, related technologies](https://openlibrary.org/search?q=ddc:667*)
* [668 Technology of other organic products](https://openlibrary.org/search?q=ddc:668*)
* [669 Metallurgy](https://openlibrary.org/search?q=ddc:669*)
### [670 Manufacturing](https://openlibrary.org/search?q=ddc:67*)
* [670 Manufacturing](https://openlibrary.org/search?q=ddc:670*)
* [671 Metalworking processes & primary metal products](https://openlibrary.org/search?q=ddc:671*)
* [672 Iron, steel, other iron alloys](https://openlibrary.org/search?q=ddc:672*)
* [673 Nonferrous metals](https://openlibrary.org/search?q=ddc:673*)
* [674 Lumber processing, wood products, cork](https://openlibrary.org/search?q=ddc:674*)
* [675 Leather & fur processing](https://openlibrary.org/search?q=ddc:675*)
* [676 Pulp & paper technology](https://openlibrary.org/search?q=ddc:676*)
* [677 Textiles](https://openlibrary.org/search?q=ddc:677*)
* [678 Elastomers & elastomer products](https://openlibrary.org/search?q=ddc:678*)
* [679 Other products of specific kinds of materials](https://openlibrary.org/search?q=ddc:679*)
### [680 Manufacture for specific uses](https://openlibrary.org/search?q=ddc:68*)
* [680 Manufacture of products for specific uses](https://openlibrary.org/search?q=ddc:680*)
* [681 Precision instruments[disambiguation needed] & other devices](https://openlibrary.org/search?q=ddc:681*)
* [682 Small forge work (Blacksmithing)](https://openlibrary.org/search?q=ddc:682*)
* [683 Hardware & household appliances](https://openlibrary.org/search?q=ddc:683*)
* [684 Furnishings & home workshops](https://openlibrary.org/search?q=ddc:684*)
* [685 Leather & fur goods, & related products](https://openlibrary.org/search?q=ddc:685*)
* [686 Printing & related activities](https://openlibrary.org/search?q=ddc:686*)
* [687 Clothing & accessories](https://openlibrary.org/search?q=ddc:687*)
* [688 Other final products, & packaging technology](https://openlibrary.org/search?q=ddc:688*)
* [689 Not assigned or no longer used ](https://openlibrary.org/search?q=ddc:689*)
### [690 Construction of buildings](https://openlibrary.org/search?q=ddc:69*)
* [690 Construction of buildings](https://openlibrary.org/search?q=ddc:690*)
* [691 Building materials](https://openlibrary.org/search?q=ddc:691*)
* [692 Auxiliary construction practices](https://openlibrary.org/search?q=ddc:692*)
* [693 Construction in specific types of materials & for specific purposes](https://openlibrary.org/search?q=ddc:693*)
* [694 Wood construction](https://openlibrary.org/search?q=ddc:694*)
* [695 Roof covering](https://openlibrary.org/search?q=ddc:695*)
* [696 Utilities](https://openlibrary.org/search?q=ddc:696*)
* [697 Heating, ventilating, air-conditioning engineering](https://openlibrary.org/search?q=ddc:697*)
* [698 Detail finishing](https://openlibrary.org/search?q=ddc:698*)
* [699 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:699*)

<a name="class-700"></a>

## [Class 700 – Arts & recreation](https://openlibrary.org/search?q=ddc:7*)

### [700 Arts](https://openlibrary.org/search?q=ddc:70*)
* [700 The Arts](https://openlibrary.org/search?q=ddc:700*)
* [701 Philosophy & theory of fine & decorative arts](https://openlibrary.org/search?q=ddc:701*)
* [702 Miscellany of fine & decorative arts](https://openlibrary.org/search?q=ddc:702*)
* [703 Dictionaries, encyclopedias, concordances of fine & decorative arts](https://openlibrary.org/search?q=ddc:703*)
* [704 Special topics in fine & decorative arts](https://openlibrary.org/search?q=ddc:704*)
* [705 Serial publications of fine & decorative arts](https://openlibrary.org/search?q=ddc:705*)
* [706 Organizations & management of fine & decorative arts](https://openlibrary.org/search?q=ddc:706*)
* [707 Education, research, related topics of fine & decorative arts](https://openlibrary.org/search?q=ddc:707*)
* [708 Galleries, museums, private collections of fine & decorative arts](https://openlibrary.org/search?q=ddc:708*)
* [709 History, geographic treatment, biography](https://openlibrary.org/search?q=ddc:709*)
### [710 Area planning & landscape architecture](https://openlibrary.org/search?q=ddc:71*)
* [710 Area planning & landscape architecture](https://openlibrary.org/search?q=ddc:710*)
* [711 Area planning (Civic art)](https://openlibrary.org/search?q=ddc:711*)
* [712 Landscape architecture (Landscape design)](https://openlibrary.org/search?q=ddc:712*)
* [713 Landscape architecture of trafficways](https://openlibrary.org/search?q=ddc:713*)
* [714 Water features in landscape architecture](https://openlibrary.org/search?q=ddc:714*)
* [715 Woody plants in landscape architecture](https://openlibrary.org/search?q=ddc:715*)
* [716 Herbaceous plants in landscape architecture](https://openlibrary.org/search?q=ddc:716*)
* [717 Structures in landscape architecture](https://openlibrary.org/search?q=ddc:717*)
* [718 Landscape design of cemeteries](https://openlibrary.org/search?q=ddc:718*)
* [719 Natural landscapes](https://openlibrary.org/search?q=ddc:719*)
### [720 Architecture](https://openlibrary.org/search?q=ddc:72*)
* [720 Architecture](https://openlibrary.org/search?q=ddc:720*)
* [721 Architectural materials & structural elements](https://openlibrary.org/search?q=ddc:721*)
* [722 Architecture from earliest times to ca. 300](https://openlibrary.org/search?q=ddc:722*)
* [723 Architecture from ca. 300 to 1399](https://openlibrary.org/search?q=ddc:723*)
* [724 Architecture from 1400](https://openlibrary.org/search?q=ddc:724*)
* [725 Public structures](https://openlibrary.org/search?q=ddc:725*)
* [726 Buildings for religious & related purposes](https://openlibrary.org/search?q=ddc:726*)
* [727 Buildings for educational & research purposes](https://openlibrary.org/search?q=ddc:727*)
* [728 Residential & related buildings](https://openlibrary.org/search?q=ddc:728*)
* [729 Design & decoration of structures & accessories](https://openlibrary.org/search?q=ddc:729*)
### [730 Sculpture, ceramics, & metalwork](https://openlibrary.org/search?q=ddc:73*)
* [730 Sculpture & related arts](https://openlibrary.org/search?q=ddc:730*)
* [731 Processes, forms, subjects of sculpture](https://openlibrary.org/search?q=ddc:731*)
* [732 Sculpture from earliest times to ca. 500, sculpture of non-literate peoples](https://openlibrary.org/search?q=ddc:732*)
* [733 Greek, Etruscan, Roman sculpture](https://openlibrary.org/search?q=ddc:733*)
* [734 Sculpture from ca. 500 to 1399](https://openlibrary.org/search?q=ddc:734*)
* [735 Sculpture from 1400](https://openlibrary.org/search?q=ddc:735*)
* [736 Carving & carvings](https://openlibrary.org/search?q=ddc:736*)
* [737 Numismatics & sigillography](https://openlibrary.org/search?q=ddc:737*)
* [738 Ceramic arts](https://openlibrary.org/search?q=ddc:738*)
* [739 Art metalwork](https://openlibrary.org/search?q=ddc:739*)
### [740 Graphic arts & decorative arts](https://openlibrary.org/search?q=ddc:74*)
* [740 Graphic arts](https://openlibrary.org/search?q=ddc:740*)
* [741 Drawing & drawings](https://openlibrary.org/search?q=ddc:741*)
* [742 Perspective in drawing](https://openlibrary.org/search?q=ddc:742*)
* [743 Drawing & drawings by subject](https://openlibrary.org/search?q=ddc:743*)
* [744 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:744*)
* [745 Decorative arts](https://openlibrary.org/search?q=ddc:745*)
* [746 Textile arts](https://openlibrary.org/search?q=ddc:746*)
* [747 Interior decoration](https://openlibrary.org/search?q=ddc:747*)
* [748 Glass](https://openlibrary.org/search?q=ddc:748*)
* [749 Furniture & accessories](https://openlibrary.org/search?q=ddc:749*)
### [750 Painting](https://openlibrary.org/search?q=ddc:75*)
* [750 Painting & paintings](https://openlibrary.org/search?q=ddc:750*)
* [751 Techniques, procedures, apparatus, equipment, materials, forms](https://openlibrary.org/search?q=ddc:751*)
* [752 Color](https://openlibrary.org/search?q=ddc:752*)
* [753 Symbolism, allegory, mythology, legend](https://openlibrary.org/search?q=ddc:753*)
* [754 Genre paintings](https://openlibrary.org/search?q=ddc:754*)
* [755 Religion](https://openlibrary.org/search?q=ddc:755*)
* [756 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:756*)
* [757 Human figures](https://openlibrary.org/search?q=ddc:757*)
* [758 Nature, architectural subjects & cityscapes, other specific subjects](https://openlibrary.org/search?q=ddc:758*)
* [759 History, geographic treatment, biography](https://openlibrary.org/search?q=ddc:759*)
### [760 Printmaking & prints](https://openlibrary.org/search?q=ddc:76*)
* [760 Printmaking & prints](https://openlibrary.org/search?q=ddc:760*)
* [761 Relief processes (Block printing)](https://openlibrary.org/search?q=ddc:761*)
* [762 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:762*)
* [763 Lithographic processes (Planographic processes)](https://openlibrary.org/search?q=ddc:763*)
* [764 Chromolithography & serigraphy](https://openlibrary.org/search?q=ddc:764*)
* [765 Metal engraving](https://openlibrary.org/search?q=ddc:765*)
* [766 Mezzotinting, aquatinting, & related processes](https://openlibrary.org/search?q=ddc:766*)
* [767 Etching & drypoint](https://openlibrary.org/search?q=ddc:767*)
* [768 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:768*)
* [769 Prints](https://openlibrary.org/search?q=ddc:769*)
### [770 Photography, computer art, film, video](https://openlibrary.org/search?q=ddc:77*)
* [770 Photography, computer art, cinematography, videography](https://openlibrary.org/search?q=ddc:770*)
* [771 Techniques, procedures, apparatus, equipment, materials](https://openlibrary.org/search?q=ddc:771*)
* [772 Metallic salt processes](https://openlibrary.org/search?q=ddc:772*)
* [773 Pigment processes of printing](https://openlibrary.org/search?q=ddc:773*)
* [774 No longer used—formerly Holography](https://openlibrary.org/search?q=ddc:774*)
* [775 No longer used—formerly Digital photography](https://openlibrary.org/search?q=ddc:775*)
* [776 Computer art (Digital art)](https://openlibrary.org/search?q=ddc:776*)
* [777 Cinematography & Videography](https://openlibrary.org/search?q=ddc:777*)
* [778 Specific fields & special kinds of photography](https://openlibrary.org/search?q=ddc:778*)
* [779 Photographic images](https://openlibrary.org/search?q=ddc:779*)
### [780 Music](https://openlibrary.org/search?q=ddc:78*)
* [780 Music](https://openlibrary.org/search?q=ddc:780*)
* [781 General principles & musical forms](https://openlibrary.org/search?q=ddc:781*)
* [782 Vocal music](https://openlibrary.org/search?q=ddc:782*)
* [783 Music for single voices](https://openlibrary.org/search?q=ddc:783*)
* [784 Instruments & Instrumental ensembles & their music](https://openlibrary.org/search?q=ddc:784*)
* [785 Ensembles with only one instrument per part](https://openlibrary.org/search?q=ddc:785*)
* [786 Keyboard, mechanical, electrophonic, percussion instruments](https://openlibrary.org/search?q=ddc:786*)
* [787 Stringed instruments (Chordophones)](https://openlibrary.org/search?q=ddc:787*)
* [788 Wind instruments (Aerophones)](https://openlibrary.org/search?q=ddc:788*)
* [789 Unassigned or no longer used ](https://openlibrary.org/search?q=ddc:789*)
### [790 Outline of sports, games & entertainment](https://openlibrary.org/search?q=ddc:79*)
* [790 Recreational & performing arts](https://openlibrary.org/search?q=ddc:790*)
* [791 Public performances](https://openlibrary.org/search?q=ddc:791*)
* [792 Stage presentations](https://openlibrary.org/search?q=ddc:792*)
* [793 Indoor games & amusements](https://openlibrary.org/search?q=ddc:793*)
* [794 Indoor games of skill](https://openlibrary.org/search?q=ddc:794*)
* [795 Games of chance](https://openlibrary.org/search?q=ddc:795*)
* [796 Athletic & outdoor sports & games](https://openlibrary.org/search?q=ddc:796*)
* [797 Aquatic & air sports](https://openlibrary.org/search?q=ddc:797*)
* [798 Equestrian sports & animal racing](https://openlibrary.org/search?q=ddc:798*)
* [799 Fishing, hunting, shooting](https://openlibrary.org/search?q=ddc:799*)

<a name="class-800"></a>

## [Class 800 – Literature](https://openlibrary.org/search?q=ddc:8*)

### [800 Literature, rhetoric & criticism](https://openlibrary.org/search?q=ddc:80*)
* [800 Literature (Belles-lettres) & rhetoric](https://openlibrary.org/search?q=ddc:800*)
* [801 Philosophy & theory](https://openlibrary.org/search?q=ddc:801*)
* [802 Miscellany](https://openlibrary.org/search?q=ddc:802*)
* [803 Dictionaries, encyclopedias, concordances](https://openlibrary.org/search?q=ddc:803*)
* [804 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:804*)
* [805 Serial publications](https://openlibrary.org/search?q=ddc:805*)
* [806 Organizations & management](https://openlibrary.org/search?q=ddc:806*)
* [807 Education, research, related topics](https://openlibrary.org/search?q=ddc:807*)
* [808 Rhetoric & collections of literary texts from more than two literatures](https://openlibrary.org/search?q=ddc:808*)
* [809 History, description, critical appraisal of more than two literatures](https://openlibrary.org/search?q=ddc:809*)
### [810 American literature in English](https://openlibrary.org/search?q=ddc:81*)
* [810 American literature in English](https://openlibrary.org/search?q=ddc:810*)
* [811 American poetry in English](https://openlibrary.org/search?q=ddc:811*)
* [812 American drama in English](https://openlibrary.org/search?q=ddc:812*)
* [813 American fiction in English](https://openlibrary.org/search?q=ddc:813*)
* [814 American essays in English](https://openlibrary.org/search?q=ddc:814*)
* [815 American speeches in English](https://openlibrary.org/search?q=ddc:815*)
* [816 American letters in English](https://openlibrary.org/search?q=ddc:816*)
* [817 American humor & satire in English](https://openlibrary.org/search?q=ddc:817*)
* [818 American miscellaneous writings in English](https://openlibrary.org/search?q=ddc:818*)
* [819 No longer used—formerly Puzzle activities](https://openlibrary.org/search?q=ddc:819*)
### [820 English & Old English literatures](https://openlibrary.org/search?q=ddc:82*)
* [820 English & Old English (Anglo-Saxon) literatures](https://openlibrary.org/search?q=ddc:820*)
* [821 English Poetry](https://openlibrary.org/search?q=ddc:821*)
* [822 English drama](https://openlibrary.org/search?q=ddc:822*)
* [822.33 William Shakespeare](https://openlibrary.org/search?q=ddc:822.33*)
* [823 English fiction](https://openlibrary.org/search?q=ddc:823*)
* [824 English essays](https://openlibrary.org/search?q=ddc:824*)
* [825 English speeches](https://openlibrary.org/search?q=ddc:825*)
* [826 English letters](https://openlibrary.org/search?q=ddc:826*)
* [827 English humor & satire](https://openlibrary.org/search?q=ddc:827*)
* [828 English miscellaneous writings](https://openlibrary.org/search?q=ddc:828*)
* [829 Old English (Anglo-Saxon) literature](https://openlibrary.org/search?q=ddc:829*)
### [830 German & related literatures](https://openlibrary.org/search?q=ddc:83*)
* [830 German literature & literatures of related languages](https://openlibrary.org/search?q=ddc:830*)
* [831 German poetry](https://openlibrary.org/search?q=ddc:831*)
* [832 German drama](https://openlibrary.org/search?q=ddc:832*)
* [833 German fiction](https://openlibrary.org/search?q=ddc:833*)
* [834 German essays](https://openlibrary.org/search?q=ddc:834*)
* [835 German speeches](https://openlibrary.org/search?q=ddc:835*)
* [836 German letters](https://openlibrary.org/search?q=ddc:836*)
* [837 German humor & satire](https://openlibrary.org/search?q=ddc:837*)
* [838 German miscellaneous writings](https://openlibrary.org/search?q=ddc:838*)
* [839 Other Germanic literatures](https://openlibrary.org/search?q=ddc:839*)
### [840 French & related literatures](https://openlibrary.org/search?q=ddc:84*)
* [840 French literature & literatures of related Romance languages](https://openlibrary.org/search?q=ddc:840*)
* [841 French poetry](https://openlibrary.org/search?q=ddc:841*)
* [842 French drama](https://openlibrary.org/search?q=ddc:842*)
* [843 French fiction](https://openlibrary.org/search?q=ddc:843*)
* [844 French essays](https://openlibrary.org/search?q=ddc:844*)
* [845 French speeches](https://openlibrary.org/search?q=ddc:845*)
* [846 French letters](https://openlibrary.org/search?q=ddc:846*)
* [847 French humor & satire](https://openlibrary.org/search?q=ddc:847*)
* [848 French miscellaneous writings](https://openlibrary.org/search?q=ddc:848*)
* [849 Occitan, Catalan, Franco-Provençal literatures](https://openlibrary.org/search?q=ddc:849*)
### [850 Italian, Romanian, & related literatures](https://openlibrary.org/search?q=ddc:85*)
* [850 Literatures of Italian, Dalmatian, Romanian, Rhaetian, Sardinian, Corsican languages](https://openlibrary.org/search?q=ddc:850*)
* [851 Italian poetry](https://openlibrary.org/search?q=ddc:851*)
* [852 Italian drama](https://openlibrary.org/search?q=ddc:852*)
* [853 Italian fiction](https://openlibrary.org/search?q=ddc:853*)
* [854 Italian essays](https://openlibrary.org/search?q=ddc:854*)
* [855 Italian speeches](https://openlibrary.org/search?q=ddc:855*)
* [856 Italian letters](https://openlibrary.org/search?q=ddc:856*)
* [857 Italian humor & satire](https://openlibrary.org/search?q=ddc:857*)
* [858 Italian miscellaneous writings](https://openlibrary.org/search?q=ddc:858*)
* [859 Literatures of Romanian, Rhaetian, Sardinian, Corsican languages](https://openlibrary.org/search?q=ddc:859*)
### [860 Spanish, Portuguese, Galician literatures](https://openlibrary.org/search?q=ddc:86*)
* [860 Literatures of Spanish, Portuguese, Galician languages](https://openlibrary.org/search?q=ddc:860*)
* [861 Spanish poetry](https://openlibrary.org/search?q=ddc:861*)
* [862 Spanish drama](https://openlibrary.org/search?q=ddc:862*)
* [863 Spanish fiction](https://openlibrary.org/search?q=ddc:863*)
* [864 Spanish essays](https://openlibrary.org/search?q=ddc:864*)
* [865 Spanish speeches](https://openlibrary.org/search?q=ddc:865*)
* [866 Spanish letters](https://openlibrary.org/search?q=ddc:866*)
* [867 Spanish humor & satire](https://openlibrary.org/search?q=ddc:867*)
* [868 Spanish miscellaneous writings](https://openlibrary.org/search?q=ddc:868*)
* [869 Literatures of Portuguese & Galician languages](https://openlibrary.org/search?q=ddc:869*)
### [870 Latin & Italic literatures](https://openlibrary.org/search?q=ddc:87*)
* [870 Latin literature & literatures of related Italic languages](https://openlibrary.org/search?q=ddc:870*)
* [871 Latin poetry](https://openlibrary.org/search?q=ddc:871*)
* [872 Latin dramatic poetry & drama](https://openlibrary.org/search?q=ddc:872*)
* [873 Latin epic poetry & fiction](https://openlibrary.org/search?q=ddc:873*)
* [874 Latin lyric poetry](https://openlibrary.org/search?q=ddc:874*)
* [875 Latin speeches](https://openlibrary.org/search?q=ddc:875*)
* [876 Latin letters](https://openlibrary.org/search?q=ddc:876*)
* [877 Latin humor & satire](https://openlibrary.org/search?q=ddc:877*)
* [878 Latin miscellaneous writings](https://openlibrary.org/search?q=ddc:878*)
* [879 Literatures of other Italic languages](https://openlibrary.org/search?q=ddc:879*)
### [880 Classical & modern Greek literatures](https://openlibrary.org/search?q=ddc:88*)
* [880 Classical Greek literature & literatures of related Hellenic languages](https://openlibrary.org/search?q=ddc:880*)
* [881 Classical Greek poetry](https://openlibrary.org/search?q=ddc:881*)
* [882 Classical Greek drama](https://openlibrary.org/search?q=ddc:882*)
* [883 Classical Greek epic poetry & fiction](https://openlibrary.org/search?q=ddc:883*)
* [884 Classical Greek lyric poetry](https://openlibrary.org/search?q=ddc:884*)
* [885 Classical Greek speeches](https://openlibrary.org/search?q=ddc:885*)
* [886 Classical Greek letters](https://openlibrary.org/search?q=ddc:886*)
* [887 Classical Greek humor & satire](https://openlibrary.org/search?q=ddc:887*)
* [888 Classical Greek miscellaneous writings](https://openlibrary.org/search?q=ddc:888*)
* [889 Modern Greek literature](https://openlibrary.org/search?q=ddc:889*)
### [890 Other literatures](https://openlibrary.org/search?q=ddc:89*)
* [890 Literatures of other specific languages and language families](https://openlibrary.org/search?q=ddc:890*)
* [891 East Indo-European & Celtic literatures](https://openlibrary.org/search?q=ddc:891*)
* [892 Afro-Asiatic literatures](https://openlibrary.org/search?q=ddc:892*)
* [893 Non-Semitic Afro-Asiatic literatures](https://openlibrary.org/search?q=ddc:893*)
* [894 Literatures of Altaic, Uralic, Hyperborean, Dravidian languages; literatures of miscellaneous languages of South Asia](https://openlibrary.org/search?q=ddc:894*)
* [895 Literatures of East & Southeast Asia](https://openlibrary.org/search?q=ddc:895*)
* [896 African literatures](https://openlibrary.org/search?q=ddc:896*)
* [897 Literatures of North American native languages](https://openlibrary.org/search?q=ddc:897*)
* [898 Literatures of South American native languages](https://openlibrary.org/search?q=ddc:898*)
* [899 Literatures of non-Austronesian languages of Oceania, of Austronesian languages, of miscellaneous languages](https://openlibrary.org/search?q=ddc:899*)

<a name="class-900"></a>

## [Class 900 – History & geography](https://openlibrary.org/search?q=ddc:9*)

### [900 History](https://openlibrary.org/search?q=ddc:90*)
* [900 History, geography, & auxiliary disciplines](https://openlibrary.org/search?q=ddc:900*)
* [901 Philosophy & theory of history](https://openlibrary.org/search?q=ddc:901*)
* [902 Miscellany of history](https://openlibrary.org/search?q=ddc:902*)
* [903 Dictionaries, encyclopedias, concordances of history](https://openlibrary.org/search?q=ddc:903*)
* [904 Collected accounts of events](https://openlibrary.org/search?q=ddc:904*)
* [905 Serial publications of history](https://openlibrary.org/search?q=ddc:905*)
* [906 Organizations & management of history](https://openlibrary.org/search?q=ddc:906*)
* [907 Education, research, related topics of history](https://openlibrary.org/search?q=ddc:907*)
* [908 History with respect to groups of people](https://openlibrary.org/search?q=ddc:908*)
* [909 World history](https://openlibrary.org/search?q=ddc:909*)
### [910 Geography & travel](https://openlibrary.org/search?q=ddc:91*)
* [910 Geography & travel](https://openlibrary.org/search?q=ddc:910*)
* [911 Historical geography](https://openlibrary.org/search?q=ddc:911*)
* [912 Graphic representations of surface of earth and of extraterrestrial worlds](https://openlibrary.org/search?q=ddc:912*)
* [913 Geography of & travel in ancient world](https://openlibrary.org/search?q=ddc:913*)
* [914 Geography of & travel in Europe](https://openlibrary.org/search?q=ddc:914*)
* [915 Geography of & travel in Asia](https://openlibrary.org/search?q=ddc:915*)
* [916 Geography of & travel in Africa](https://openlibrary.org/search?q=ddc:916*)
* [917 Geography of & travel in North America](https://openlibrary.org/search?q=ddc:917*)
* [918 Geography of & travel in South America](https://openlibrary.org/search?q=ddc:918*)
* [919 Geography of & travel in Australasia, Pacific Ocean islands, Atlantic Ocean islands, Arctic islands, Antarctica, & on extraterrestrial worlds](https://openlibrary.org/search?q=ddc:919*)
### [920 Biography & genealogy](https://openlibrary.org/search?q=ddc:92*)
* [920 Biography, genealogy, insignia](https://openlibrary.org/search?q=ddc:920*)
* [921–928 This range is reserved as an optional location for biographies, which are shelved alphabetically by subject's last name.](https://openlibrary.org/search?q=ddc:[921 TO 928])
* [929 Genealogy, names, insignia](https://openlibrary.org/search?q=ddc:929*)
### [930 History of ancient world (to ca. 499)](https://openlibrary.org/search?q=ddc:93*)
* [930 History of ancient world to ca. 499](https://openlibrary.org/search?q=ddc:930*)
* [931 China to 420](https://openlibrary.org/search?q=ddc:931*)
* [932 Egypt to 640](https://openlibrary.org/search?q=ddc:932*)
* [933 Palestine to 70](https://openlibrary.org/search?q=ddc:933*)
* [934 South Asia to 647](https://openlibrary.org/search?q=ddc:934*)
* [935 Mesopotamia to 637 & Iranian Plateau to 637](https://openlibrary.org/search?q=ddc:935*)
* [936 Europe north & west of Italian Peninsula to ca. 499](https://openlibrary.org/search?q=ddc:936*)
* [937 Italian Peninsula to 476 & adjacent territories to 476](https://openlibrary.org/search?q=ddc:937*)
* [938 Greece to 323](https://openlibrary.org/search?q=ddc:938*)
* [939 Other parts of ancient world](https://openlibrary.org/search?q=ddc:939*)
### [940 History of Europe](https://openlibrary.org/search?q=ddc:94*)
* [940 History of Europe](https://openlibrary.org/search?q=ddc:940*)
* [941 British Isles](https://openlibrary.org/search?q=ddc:941*)
* [942 England & Wales](https://openlibrary.org/search?q=ddc:942*)
* [943 Germany & neighboring central European countries](https://openlibrary.org/search?q=ddc:943*)
* [944 France & Monaco](https://openlibrary.org/search?q=ddc:944*)
* [945 Italy, San Marino, Vatican City, Malta](https://openlibrary.org/search?q=ddc:945*)
* [946 Spain, Andorra, Gibraltar, Portugal](https://openlibrary.org/search?q=ddc:946*)
* [947 Russia & neighboring east European countries](https://openlibrary.org/search?q=ddc:947*)
* [948 Scandinavia](https://openlibrary.org/search?q=ddc:948*)
* [949 Other parts of Europe](https://openlibrary.org/search?q=ddc:949*)
### [950 History of Asia](https://openlibrary.org/search?q=ddc:95*)
* [950 History of Asia](https://openlibrary.org/search?q=ddc:950*)
* [951 China & adjacent areas](https://openlibrary.org/search?q=ddc:951*)
* [952 Japan](https://openlibrary.org/search?q=ddc:952*)
* [953 Arabian Peninsula & adjacent areas](https://openlibrary.org/search?q=ddc:953*)
* [954 India & neighboring south Asian countries;](https://openlibrary.org/search?q=ddc:954*)
* [955 Iran](https://openlibrary.org/search?q=ddc:955*)
* [956 Middle East (Near East)](https://openlibrary.org/search?q=ddc:956*)
* [957 Siberia (Asiatic Russia)](https://openlibrary.org/search?q=ddc:957*)
* [958 Central Asia](https://openlibrary.org/search?q=ddc:958*)
* [959 Southeast Asia](https://openlibrary.org/search?q=ddc:959*)
### [960 History of Africa](https://openlibrary.org/search?q=ddc:96*)
* [960 History of Africa](https://openlibrary.org/search?q=ddc:960*)
* [961 Tunisia & Libya](https://openlibrary.org/search?q=ddc:961*)
* [962 Egypt, Sudan, South Sudan](https://openlibrary.org/search?q=ddc:962*)
* [963 Ethiopia & Eritrea](https://openlibrary.org/search?q=ddc:963*)
* [964 Morocco, Ceuta, Melilla Western Sahara, Canary Islands](https://openlibrary.org/search?q=ddc:964*)
* [965 Algeria](https://openlibrary.org/search?q=ddc:965*)
* [966 West Africa & offshore islands](https://openlibrary.org/search?q=ddc:966*)
* [967 Central Africa & offshore islands](https://openlibrary.org/search?q=ddc:967*)
* [968 Republic of South Africa & neighboring southern African countries](https://openlibrary.org/search?q=ddc:968*)
* [969 South Indian Ocean islands](https://openlibrary.org/search?q=ddc:969*)
### [970 History of North America](https://openlibrary.org/search?q=ddc:97*)
* [970 History of North America](https://openlibrary.org/search?q=ddc:970*)
* [971 Canada](https://openlibrary.org/search?q=ddc:971*)
* [972 Mexico, Central America, West Indies, Bermuda](https://openlibrary.org/search?q=ddc:972*)
* [973 United States](https://openlibrary.org/search?q=ddc:973*)
* [974 Northeastern United States (New England & Middle Atlantic states)](https://openlibrary.org/search?q=ddc:974*)
* [975 Southeastern United States (South Atlantic states)](https://openlibrary.org/search?q=ddc:975*)
* [976 South central United States](https://openlibrary.org/search?q=ddc:976*)
* [977 North central United States](https://openlibrary.org/search?q=ddc:977*)
* [978 Western United States](https://openlibrary.org/search?q=ddc:978*)
* [979 Great Basin & Pacific Slope region of United States](https://openlibrary.org/search?q=ddc:979*)
### [980 History of South America](https://openlibrary.org/search?q=ddc:98*)
* [980 History of South America](https://openlibrary.org/search?q=ddc:980*)
* [981 Brazil](https://openlibrary.org/search?q=ddc:981*)
* [982 Argentina](https://openlibrary.org/search?q=ddc:982*)
* [983 Chile](https://openlibrary.org/search?q=ddc:983*)
* [984 Bolivia](https://openlibrary.org/search?q=ddc:984*)
* [985 Peru](https://openlibrary.org/search?q=ddc:985*)
* [986 Colombia & Ecuador](https://openlibrary.org/search?q=ddc:986*)
* [987 Venezuela](https://openlibrary.org/search?q=ddc:987*)
* [988 Guiana](https://openlibrary.org/search?q=ddc:988*)
* [989 Paraguay & Uruguay](https://openlibrary.org/search?q=ddc:989*)
### [990 History of other areas](https://openlibrary.org/search?q=ddc:99*)
* [990 History of Australasia, Pacific Ocean islands, Atlantic Ocean islands, Arctic islands, Antarctica, extraterrestrial worlds](https://openlibrary.org/search?q=ddc:990*)
* [991–992 Not assigned or no longer used](https://openlibrary.org/search?q=ddc:[991 TO 992])
* [993 New Zealand](https://openlibrary.org/search?q=ddc:993*)
* [994 Australia](https://openlibrary.org/search?q=ddc:994*)
* [995 New Guinea & neighboring countries of Melanesia](https://openlibrary.org/search?q=ddc:995*)
* [996 Polynesia & other Pacific Ocean islands](https://openlibrary.org/search?q=ddc:996*)
* [997 Atlantic Ocean islands](https://openlibrary.org/search?q=ddc:997*)
* [998 Arctic islands & Antarctica](https://openlibrary.org/search?q=ddc:998*)
* [999 Extraterrestrial worlds](https://openlibrary.org/search?q=ddc:999*)

Source: https://en.wikipedia.org/wiki/List_of_Dewey_Decimal_classes
title: Dewey Decimal List
m: edit