nyuuzyou/wikis huggingface dataset:
African walnut

== Description ==
1) Golden yellow to reddish brown heartwood with darker streaks and veins from the Lovoa Trichilioides tree — a monoecious, evergreen indigenous to Central and Southern Africa’s tropical regions. The color of the African walnut darkens with age and exposure. The sapwood is generally narrow but can be up tp 3 inches (7.5 cm) and is clearly demarcated from the heartwood. African Walnut’s grains are typically straight or slightly interlocked — yielding good working properties — with a fine to medium, consistent texture and a fine natural luster. It often displays a ribbon-stripe figuring on quartersawn surfaces, similar to Sapele. It turns, glues and finishes well. The wood is considered moderately durable.
2) Another name for tigerwood.
== Synonyms and Related Terms ==
Lovia trichilioiides; undianuno preto (Port.); tigerwood
==Physical and Chemical properties==
*1) Average Dried Weight: 34 lbs/ft3 (540 kg/m3)
*1) Specific Gravity (Basic, 12% MC): .45, .54
*1) Janka Hardness: 940 lbf (4,180 N)
*1) Modulus of Rupture: 12,250 lbf/in2 (84.5 MPa)
*1) Elastic Modulus: 1,340,000 lbf/in2 (9.24 GPa)
*1) Crushing Strength: 6,700 lbf/in2 (46.2 MPa)
*1) Shrinkage: Radial: 3.7%, Tangential: 5.9%, Volumetric: 10.8%, T/R Ratio: 1.6
==Resources and Citations==
* Wood Database: African walnut
* Rare woods: African walnut
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 856
Category:Materials database
Africano marble

== Description ==
A multicolored marble quarried in Turkey near Teos. Africano marble is black with spots of red, beige, white, and gray. It was used for decoration, especially in ancient Greek and Roman buildings. Africano marble was also used in Basilica of Saint Peter in Rome and Westminster Cathedral.
== Synonyms and Related Terms ==
lucelleum (lat.); Black of Chios; Marmo Africano Antico; marmor Chium ; mármol africano (Esp.); Afrikanischer Marmor (Deut.)
==Resources and Citations==
* Website: www.westminstercathedral.org.uk/art/art_marbles.html
* Website: http://www.litosonline.com/articles/62/ar6201e.shtml
* Janet Burnett Grossman, Looking at Greek and Roman Sculpture in Stone, J. Paul Getty Trust, Los Angeles, 2003
Category:Materials database
Afyon marble

== Description ==
A fine-grain, white marble with occasional pale gray or yellow areas. Afyon marble was quarried near what is now the modern city of Afyon in western Turkey.
== Synonyms and Related Terms ==
docimium (Lat.); sinnada (Lat.)
==Resources and Citations==
* Encyclopedia Britannica, http://www.britannica.com Comment: "Afyon." Accessed 25 Apr. 2004.
* Janet Burnett Grossman, Looking at Greek and Roman Sculpture in Stone, J. Paul Getty Trust, Los Angeles, 2003
Category:Materials database
Agalite

== Description ==
A former brand name for a fibrous variety of talc (hydrated magnesium silicate) that was used in paper coatings. Agalite produced a dense, highly polished paper. The soapstone mineral is mined in New Jersey. Other similar minerals, such as talc and asbestine, have also been called agalite.
== Synonyms and Related Terms ==
Agalit (Deut.)
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 794
* Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
* The Dictionary of Paper, American Paper Institute, New York, Fourth Edition, 1980
* E.J.LaBarre, Dictionary and Encyclopedia of Paper and Paper-making, Swets & Zeitlinger, Amsterdam, 1969
Category:Materials database
Agalmatolite

== Description ==
A soft, talc-like stone composed of hydrated aluminum silicate. The gray, green or yellow stone is also called pagodite since it was often used by the Chinese for carving pagodas (Mayer 1969). Agalmatolite is a variety of pyrophyllite. It has a specific gravity of 2.8-2.9 and has been used as a substitute for talc.
== Synonyms and Related Terms ==
pagodite; pyrophyllite; agalmatolita (Esp.); Agalmatolith (Pyrophyllit; Deut.)
== Physical and Chemical Properties ==
* Mohs Hardness = 1.0 - 2.0
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 600
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
Category:Materials database
Agar

== Description ==
A gelatin-like, polysaccharide substance extracted from various species of red seaweed, belonging to the Rhodophyceae class, that grow in the Pacific and Indian Oceans and the Japan Sea. According to legend, agar was first discovered in the mid-17th century in Japan. Agar contains agarose and agaropectin. Agar is available in dried cakes, coarse granules, long strips and thin sheets. It is strongly hydrophilic and can absorb over 20 times its own weight in cold water. Agar dissolves in hot water and forms a stiff, clear jelly upon cooling, even at concentrations as low as 0.7%. However, when agar films are desiccated, they shrink significantly. Most commonly used as a media for culturing bacteria and fungi, agar has also been used for sizing textiles and paper. It is an important emulsifying agent in foodstuffs, photographs, dental mold materials, cosmetics, and adhesives. Agar was also used to make an experimental synthetic gauzelike fabric in England. The primary commercial sources for agar are Japan, New Zealand, Australia, Russia, and the United States.
[[[SliderGallery rightalign|Agar-Agar, Gettens 100.B48.TIF~FTIR (MFA)]]]
== Synonyms and Related Terms ==
agar-agar (AAT); agar (Esp., Port.); agar agar (It.); agar-agar (Fr.); agar agar; agal-agal; Chinese isinglass; Chinese gelating; Japanese gelatin; Japanese isinglass; kantan; Australian agar; gelose; Bengal isinglass; Bengal gelatin; Ceylon isinglass; Ceylon gelatin; agarose
== Risks ==
* Nonflammable. 
* No known hazards. 
* ThermoFisher: SDS
== Physical and Chemical Properties ==
* Insoluble in ethanol; swells in cold water. 
* Slowly soluble in hot water and forms a gel on cooling (37-40 C)
* CAS = 9002-18-0
* Melting Point = 60-97 (gel)
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p.19
* Encyclopedia Britannica, http://www.britannica.com Comment: "agar" [Accessed February 12, 2002].
* Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
* Fairchild's Dictionary of Textiles, Phyllis G.Tortora, Robert S. Merkel (eds.), Fairchild Publications, New York City, 7th edition, 1996
* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000 Comment: preferred term: agar-agar
* S.R.Trotman, E.R. Trotman, Textile Analysis, J.B. Lippincott Company, Philadelphia, 1932
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
Category:Materials database
Agar-agar

== Description ==
The word 'agar' means seaweed. When a word is doubled, as in agar-agar, most translations take this as a superlative form of the word. Thus, 'agar-agar' means 'best agar' or 'best seaweed'. Current usage drops the repeated term.
== Synonyms and Related Terms ==
given as preferred term in AAT
Category:Materials database
Agarwood

== Description ==
Hardwood from the Acquilaria agallocha tree of the Thymelaceae family that is native to China and other parts of Asia. The sapwood is whitish in color, while the heartwood is dark with a distinctive figuring. Agarwood was formerly an expensive but popular wood for inlay work that is now rarely sold commercially. The resinous wood has also been used for incense, perfume, cosmetics and medicinal purposes.
== Synonyms and Related Terms ==
Acquilaria agallocha; Acquilaria malaccensis; Lignum aloes; Lignum aquila; aloeswood; aloes wood; paradise wood; calambac; agalloc; eaglewood; eagle wood; eagle-wood; chen-xiang (Chin.); jinko (Jap.); oud (Arab.)
== Physical and Chemical Properties ==
* Density = 20-23 pcf
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 671
* F. H. Titmuss, Commercial Timbers of the World, The Technical Press Ltd., London, 1965
* Gordon Hanlon, contributed information, 1998
* Wikipedia: http://en.wikipedia.org/wiki/Aloeswood (Accessed Mar. 15, 2006)
Category:Materials database
Agate

== Description ==
A cryptocrystalline variety of silica, showing a variegated banded structure and waxy luster. Agate bands are due to the deposition of successive mineral layers from solution and may be either straight, wavy, or concentric. Agate is slightly harder than quartz. It has been gathered or mined since Neolithic times. Sources for agate include western Asia, India, Brazil, Uruguay, and Germany. Onyx is a type of agate in which the bands are parallel. Sardonyx is a variety of onyx that has alternating red and cream layers. Moss agates contain brown dendritic or fernlike patterns. Agates are used for gemstones, beads, amulets, mortars and pestles, burnishers for gilding, textile rollers, knife edges, and as ornamental stones.
[[[SliderGallery rightalign|Chalcedony or flint.TIF~FTIR (MFA)|agateRS.jpg~Raman (RASMIN)]]]
== Synonyms and Related Terms ==
Achat (Deut.); agat (Dan., Pol.); ágata (Esp., Port.); agathe (Fr.); agaat (Ned.)
Examples include: onyx; sardonyx
== Risks ==
*May contain silica dust; chronic inhalation can cause silicosis.
== Physical and Chemical Properties ==
* Fracture = conchoidal 
* Luster = vitreous to waxy 
* Streak = white to none
* Colors may include white, grey, light blue, orange, red, and black
* Fluorescence = generally inert
* Pleochroism = absent
Composition 	SiO2
Mohs Hardness 	6.5-7.0
Density 	2.59-2.61 g/ml
Refractive index	1.535 - 1.539
Birefringence 	undetectable to 0.004
== Comparisons ==
== Additional Images ==
File:image 5-agate.jpg|Agate mineral
File:Agatekes.jpg|Agate
File:pa30325agate.jpg|Agate
==Resources and Citations==
* Gem Identification Lab Manual, Gemological Institute of America, 2016.
* Mineralogy Database: Quartz
* CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: density = 2.5-2.7
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p.21
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
* Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992
* C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979
* Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
* Sue Fuller, Rocks and Minerals, DK Publishing, Inc., New York City, 1995
* Jack Odgen, Jewellery of the Ancient World, Rizzoli International Publications Inc., New York City, 1982
* A.Lucas, J.R.Harris, Ancient Egyptian Materials and Industries, Edward Arnold Publishers Ltd., London, 4th edition, 1962
Category:Materials database
Agate glass

== Description ==
A variegated glass made to imitate the colored band patterns of natural agate. Agate glass is made by layering different colored glasses, usually of varying thickness, then fusing them into a single block. The cross section of the block is then cut or ground to simulate natural agate.A similar glass, called, calcedonio, was made by Venetian glass-blowers to simulate chalcedony. The;y combined threads of variously colored glass to create richly colored stones that includes agate and onyx. Additionally, inclusions of small metallic glitter was added to simulate aventurine, another gemstone. 
Agate glass techniques are commonly used for marbles (decorative glass balls). Developments of new manufacturing techniques in the early 20th century, led to the creating of the agate glass ashtrays, cream jars, vases, and flower pots. The glass products were discontinued in the 40s due to the popularity of plastics.
== Synonyms and Related Terms ==
calcedonio; vidro de ágata (Port.)
==Resources and Citations==
* Henry Hodges, Artifacts: An Introduction to Early Materials and Technology, Ronald P. Frye, Kingston, Canada, 1988
* Akro Agate: History of marbles (Accessed August 2020).
Category:Materials database
Agateen Lacquer

== Description ==
A brand name for a cellulose nitrate based solution that produces a crystal clear film often used to minimize tarnish on silver and silverplate. In the 1980s, The Winterthur Museum began testing lacquer coatings and chose Agateen Lacquer #27 to care for their silver collection based on its visual appearance, stability, and tarnish protection. Even so, the coating has a limited life expectancy of approximately 20-30 years dependent on environmental conditions. The application process, via brushing, spraying or dipping, is critical as the coating must an even, continuous film to provide protection from atmospheric pollutants. Agateen thinner is a solvent blend of methyl isobutyl ketone, toluene, Butanol and butyl acetate that is sold for use with Agateen lacquer.
== Synonyms and Related Terms ==
Agateen lacquer #7; cellulose nitrate
== Applications ==
* Coating silver
== Personal Risks ==
== Collection Risks ==
Becomes yellow and brittle with age.
Links to Oddy Test results posted on AIC Wiki Materials Database Pages for individual materials below
* Agateen tested in 2016
== Physical and Chemical Properties ==
Soluble in acetone. 
== Working Properties ==
== Forms and Sizes ==
== Resources and Citations ==
* AIC Conservation-Wiki: Tarnish
* Chandra L. Reedy, Richard A Corbett, Deborah L. Long, Robert E. Tatnall and Bradley D. Krantz "Evaluation of three Protective Coating for Indoor Silver Objects", Objects Specialty Group postprints, American Institute for Conservation 27th Annual Meeting, St. Louis. Washington, D. C.:AIC. 6:41–69, 1998. Link
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 436
* Marie Svoboda, Conservation Survey Index, unpublished, 1997
Category:Materials databaseCategory:MWGCategory:CoatingsCategory: Coating: Solvent-based
Agave

== Description ==
Any several succulent plants (family Agavaceae) native to the western hemisphere. Agave plants have with long, fleshy leaves that are grown out from a central base. Flowers are produced from a tall bentral stalk. Hard, strong fibers obtained from several species of agave plants that grow abundantly in Mexico. The thick rigid leaves are cut, boiled and scraped to produce clean, long fibers. The various species of agave produce sisal, cantala, henequen, and istle fibers. They are used in rope, cordage and sacking but are not as strong or as water-resistant as hemp. 
Examples are: 
* sisal (A.sisalana formerly A. rigida) 
* cantala (A.cantala) 
* henequen (A.fourcroydes) 
* istle (A.funkiana and A. lophantha) 
* letona (A. letonae) 
* American hemp (A. americana) 
* false sisal hemp (A. decipiens)
== Synonyms and Related Terms ==
sisal (A.sisalana); cantala (A.cantala); henequen (A.fourcroydes); istle (A.funkiana and A. lophantha); aloe; American hemp (A. americana); false sisal hemp (A. decipiens); letona (A. letonae); agave fibres (Br.); Agaven (Deut.); agawa (Pol.); sisal (Esp. Fr.); ; Sisalhennep (Ned); aloe
== Resources and Citations ==
* F. Kidd, Brushmaking Materials, Bristish Brush Manufacturers, London, 1957
* Wikipedia: http://en.wikipedia.org/wiki/Agave (access Jan. 24, 2006)
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 728
* Fairchild's Dictionary of Textiles, Phyllis G.Tortora, Robert S. Merkel (eds.), Fairchild Publications, New York City, 7th edition, 1996
Category:Materials database
Agba

== Description ==
A tropical tree, Gossweilerodendron balsamiferum, native to the rain forests of west Africa. The enormous trees are an important timber resource producing hard, strong, pink to reddish-brown wood. The wood has a faint growth rings with evenly scattered pores. Its fine texture and straight grain, resembles mahogany. The soft, lightweight timber is used for veneers, furniture, window frames, and flooring. The tree produces abundant amounts of gum that sometimes interfere with the finishing processes.
== Synonyms and Related Terms ==
Gossweilerodendron balsamiferum; tola blanc (Fr.); Agba (Deut.); abga (It.); tola blanca (Esp.); tola branca (Port.); Nigerian cedar; pink mahogany; white tola; noboron; achi
== Physical and Chemical Properties ==
* pink to brick red; distinct annual rings; 
* diffuse pores; 
* faint grain; * obscure rays; 
* lightweight; 
* soft; peppery smell when freshly cut
* density = 31 ppcf
* specific gravity = 0.50
==Resources and Citations==
* F. H. Titmuss, Commercial Timbers of the World, The Technical Press Ltd., London, 1965
* H.L.Edlin, What Wood is That?, Viking Press, New York, 1969
* Gordon Hanlon, contributed information, 1998
Category:Materials database
Agel fiber

== Description ==
A fine, white fiber obtained from the leaf stalks of the gebang palm that is found in the Philippines. Agel fiber is used for sailcloth, rope and fishnets. Coarser fibers obtained from the plant stems are woven into hats.
== Synonyms and Related Terms ==
agel fibre; gebang
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 237
Category:Materials database
Ageless

== Description ==
[Mitsubishi Gas Chemical, Japan] A registered trademark for a series of products designed to absorb oxygen from the air. Ageless® was first sold in Japan in 1977. It is composed of fine particles of iron (<50 mesh) mixed with a natural zeolite and a small amount of sulfur and sea salt (potassium chloride). This mixture is sealed in small, polyethylene bags that are permeable to oxygen but not to moisture. The zeolite maintains a constant moisture environment within the bag, and the salt is an electrolyte, thus providing the perfect conditions for the iron powder to oxidize or rust. Ageless® has been used to produce an oxygen-free environment for the killing insects (Grattan and Gilberg, 1994). It is usually placed with, but not touching, an infested object inside a sealed bag made from an oxygen barrier film. The number designation after the Ageless® name indicates the package size, i.e. Ageless® Z-2000 can absorb 2000 ml of oxygen.
== Synonyms and Related Terms ==
Ageless Z; Ageless-Z
== Risks ==
The reaction of oxygen with iron is exothermic.
== Resources and Citations ==
* D.Grattan, M.Gilberg, "Ageless Oxygen Absorber: Chemical and Physical Properties" Studies in Conservation 39:210-214, 1994.
* N.Valentin, F.Preusser, "Insect Control by Inert Gases in Museums, Archives and Libraries" Restaurator 11:22-23, 1990.
* Ageless: Website
* Marie Svoboda, Conservation Survey Index, unpublished, 1997
* Conservation Support Systems, Catalog, 1997
Category:Materials database
Agfacolor

== Description ==
[Agfa, Ger.] A registered trademark originally used for color photographic plates manufactured in Berlin in 1916. Agfacolor® plates were made with tiny dyed grains of gum arabic or shellac. The fine-grains gave an intense color. Agfacolor® grain sheets were introduced as rolls and sheets in 1932. A slide film, called Agfacolor® Neu (or Agfacolor® new) was introduced in 1936. It uses the subtractive color process to produce color negatives. Agfacolor® printing paper that used a multilayer negative-positive process was introduced in 1942.
==Resources and Citations==
* Luis Nadeau, Encyclopedia of Printing, Photographic, and Photomechanical Processes, Atelier, New Brunswick, 1997
* Wikipedia at http://en.wikipedia.org/wiki/Agfacolor (Accessed Mar. 1, 2006)
Category:Materials database
Aggregate

== Description ==
A combination of inert particles that adhere to form a solid mineral mixture. Aggregate components may be sand, marble dust, crushed stone, gravelr, or slag. They are often added to mortar, stucco, or concrete to give the mixture strength and stability as well as minimize shrinkage.
== Synonyms and Related Terms ==
aggrégat (Fr.); agregado (Esp., Port.); aggregaat (Ned.)
== Resources and Citations ==
* Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
* Robert Fournier, Illustrated Dictionary of Practical Pottery, Chilton Book Company, Radnor, PA, 1992
* Reed Kay, The Painter's Guide To Studio Methods and Materials, Prentice-Hall, Inc., Englewood Cliffs, NJ, 1983
* Matte Paint: Its history and technology, analysis, properties and conservation treatment, Eric Hansen, Sue Walston, Mitchell Bishop (ed.), J. Paul Getty Trust, Los Angeles, Vol. 30 of AATA, 1993
* Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Aging

== Description ==
The change in a material from exposure to natural environmental conditions over a lengthy period of time. Aging can be deleterious to many materials. Some materials, such as rubber, lose strength and crack due to oxidation. Light exposure may cause some paints and dyes to fade. Moisture can cause metals to corrode. However in other cases, aging can be beneficial. Cheese and wine can develop a sharper flavor or aroma over time. Steam aging is sometimes used in the manufacturing of textiles to fix the dye color.
== Synonyms and Related Terms ==
ageing (Br.); Altern (Deut.); viellissement (Fr.); envelhecimento (Port.)
== Resources and Citations ==
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* Hoechst Celanese Corporation, Dictionary of Fiber & Textile Technology (older version called Man-made Fiber and Textile Dictionary, 1965), Hoechst Celanese Corporation, Charlotte NC, 1990
* Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
Category:Materials database
Aich's metal

== Description ==
A brass alloy containing copper (60%), zinc (38.2%) and iron (1.8%) that was patented by J. Aich in 1860. The addition of iron hardens the alloy and makes it more suitable for forging.
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 524
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
Category:Materials database
Air

== Description ==
The common name for the natural mixture of gases surrounding the earth. Air, or atmosphere, predominately contains nitrogen (75-78 %) and oxygen (21-23 %). Trace levels of other gases (argon, carbon dioxide, neon, helium, methane, etc.) are also present along with varying amounts of water vapor. The index of refraction of air is 1.0003. Air is the primary source for the manufacture of pure gases (oxygen, nitrogen, etc.). It is also used as a coolant, as a blowing agent, and as a filler in flotation devices.
== Synonyms and Related Terms ==
Luft (Deut.); air (Fr.); ar (Port.)
== Risks ==
Noncombustible; but necessary for combustion.
== Physical and Chemical Properties ==
Melting Point 	-216.2 to -191.3 C
Density 	1.00 g/ml
Refractive Index	1.0003
Boiling Point 	-194.3 C
==Resources and Citations==
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971
* Susan E. Schur, Conservation Terminology: A review of Past & Current Nomenclature of Materials, Technology and Conservation, Spring (p.34-39); Summer (p.35-38); Fall (p.25-36), 1985
* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
* Wikipedia: http://en.wikipedia.org/wiki/Air (Accessed Mar. 1, 2006)
Category:Materials database