# Library of Congress Classification:Class Z -- Bibliography. Library Science. Information resources

Class Z: Bibliography. Library Science. Information resources is a classification used by the Library of Congress Classification system. This page outlines the sub-classes of Class Z.

## Z - Books (general). Writing. Palaeography. Book Industries and trade. Libraries. Bibliography

    4-115.5...............Books (General). Writing. Paleography
       4-8..................History of books and bookmaking
       40-104.5.............Writing
          41-42.5.............Autographs. Signatures
          43-45...............Calligraphy. Penmanship
          48..................Duplicating processes. Copying services. Including mimeographing, multilithing
          49-51.5.............Typewriters. Typewriting. Keyboards. Keyboarding
          52-52.5.............Word processing
          53-102..............Shorthand. Stenography. Phonography
          102.5-104.5.........Cryptography. Cipher. Invisible writing
       105-115.5............Manuscript. Paleography
    116-659...............Book industries and trade
       116.A2...............Treatises on the modern printed book
       116.A3...............Book design
       116.A5-265.5.........Printing
          124-228.............History
          231-234.............Printers and printing establishments
             234................Medallic history of printing. Tokens
          235-236.............Printer's marks, mottoes, etc.
          237.................Paper. Watermarks, etc.
          240-241.5...........Incunabula. Block books. Including broadsides, playing cards
          242.9-264.5.........Practical printing. Including printing as a business, layout, paper and ink, machinery, type and type founding, electrotyping, desktop publishing, typesetting, presswork
          265-265.5...........Representation or reproduction of books, documents, etc., by photography, microphotography, or other means
       266-276..............Bookbinding. Book decoration
       278-549..............Bookselling and Publishing
       551-656..............Copyright
       657-659..............Freedom of the press. Censorship
    662-1000.5............Libraries
       662-664..............Collections
       665-718.8............Library science. Information science
          668-669.7...........Library education. Research
          672-Z672.13.........Library cooperation and coordination
          674.7-674.83........Library information networks
          675.................Classes of libraries
          678-678.88..........Library administration and organization. Constitution
          678.89-678.892......Library service agencies
          678.9-Z678.93.......Automation
          679-680.............Library buildings. Library architecture. Including planning, space utilization, security, safety, lighting, etc.
          680.3-680.6.........Library communication systems
          681-681.3...........Reproduction of library materials. Storage media of library materials
          681.5-681.7.........Trustees. Library boards, committees, etc.
          682-682.4...........Personnel
          683-683.5...........Finance. Insurance
          684-685.............Supplies. Shelving. Bookstacks
          686.................Branches. Delivery stations. Bookmobiles
          687-718.85..........The collections. The books
             688................Special collections
             688.5-688.6........Processing
             689-689.8..........Acquisition (selection, purchase, gifts, duplicates)
             690................Exchanges
             691-692............Special classes of materials. Including manuscripts, maps, microforms, serials
             693-695.83.........Cataloging
             695.85.............Library handwriting
             695.87.............Printing of catalogs
             695.9-695.94.......Indexing. Abstracting
             695.95.............Alphabetizing. Filing
             695.98.............Recataloging. Reclassification
             696-697............Classification and notation
             698................Shelflisting. Author notation
             699-699.5..........Machine methods of information and retrieval. Mechanized bibliographic control
             699.7..............Physical processing. Shelf preparation
             700................Bookbinding
             700.9-701.5........Physical parameters, preservation, conservation and restoration of books and other library materials
             702................Thefts and losses of books and other library materials
             703.5..............Stack management. Disposition of books on shelves, etc.
             703.6..............Discarding. Weeding
          711-711.95..........Public services. Reference services
          712-714.............Circulation. Loans. Charging systems
          716-716.15..........Library extension. Library commissions. Traveling libraries
          716.2-718.85........Libraries in relation to special topics. Including libraries and community, libraries and television, children's libraries, libraries and students
       719-723..............Libraries (General)
       729-875..............Library reports. History. Statistics
       881-977..............Library catalogs and bulletins
       987-996.3............Book collecting. Including bibliophilism, bookplates
       997-997.2............Private libraries
       999-1000.5...........Booksellers' catalogs
    1001-1121.............General Bibliography
       1001.................Introduction to bibliography. Theory, philosophy, psychology. Bibliography. Documentation
       1003-1003.5..........Choice of books. Books and reading. Book reviews
       1003.8-1004..........Biography of bibliographers
       1011-1017............General bibliographies
       1019-1033............Special classes of books. Including prohibited books, rare books, paperbacks, reprints
       1035-1035.9..........Best books
       1036.................Booksellers' general catalogs of modern books
       1037-1039............Books for special classes of persons, institutions, etc.
       1041-1107............Antonyms and pseudonyms
    1201-4980.............National bibliography
       1201-1946............America
          1215-1363..........United States
          1365-1401..........Canada. British North America
          1411-1939..........Mexico. Central America. West Indies. South America
       1975................Eastern Hemisphere
       2000-2959...........Europe
       3001-3496...........Asia
       3501-3975...........Africa
       4001-4980...........Australia. Oceania
    5051-7999............Subject bibliography. Subjects arranged in alphabetical sequence
    8001-8999............Personal bibliography. Names of individuals arranged in alphabetical sequence

## ZA - Information Resources (General)

    3038-5190...........Information resources (General)
       3150-3159..........Information services. Information centers
       3201-3250..........Information superhighway
       4050-4775..........Information in specific formats or media
          4050-4480.........Electronic information resources
             4150-4380........Computer network resources
             4450-4460........Databases
       4550-4575..........Motion pictures. Video recordings
       4650-4675..........Pictures. Photographs
       4750-4775..........Sound recordings
    5049-5190...........Government information