nyuuzyou/wikis huggingface dataset:
Hexaflumuron

==Description== 
A common name for insect growth regulator (IGR) insecticide used in several termite control products registered to Dow AgroSciences LLC. Hexaflumuron is an odorless white solid that is formulated into low-concentration solid briquettes that are contained within tamper-resistant bait stations. It act by disrupting chitin synthesis in developing termites. Chitin is the main component of the termite exoskeleton. Hexaflumuron and its end-use termite bait products are registered by the EPA for use to protect structures against subterranean termite colonies.
It is used in both above-ground and in-ground bait stations as part of a termite monitoring and control program. Target sites can include buildings, fences, utility poles, decking, landscape plantings, trees, and other wood structures that can be damaged by termite foraging and feeding. 
==Risks==
* Hexaflumuron is highly toxic to aquatic invertebrate organisms.
* Sigma-Aldrich: SDS
==Resources and Citations==
* Nan-Yao Su, Jamey D. Thomas, Rudolf H. Scheffrahn, "Elimination of Subterranean Termite Populations from the Statue of Liberty National Monument Using a Bait Matrix Containing an Insect Growth Regulator, Hexaflumuron" JAIC Vol 37(3):282-92, 1998.
* Epests Control: Hexaflumuron
Category:Materials database
Hexalin

== Description ==
[DuPont] A brand name for cyclohexanol solvent containing 2.25% methanol. Cyclohexanol dissolves oils, gums, waxes, rubber, and resins and is used as a dry cleaning agent.
==Resources and Citations==
* Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 744
Category:Materials database
Hexamethylenediamine

== Description ==
One of the starting materials for the polymerization of nylon 6,6.
== Synonyms and Related Terms ==
1,6-diaminohexane; 1,6-hexanediamine
[[[SliderGallery rightalign|hexamethylenediamine.jpg~Chemical structure]]]
==Risks==
Toxic by ingestion. Skin irritant. Combustible. Flash point = 71C 
ThermoFisher: SDS
== Physical and Chemical Properties ==
Soluble in water. Slightly soluble in ethanol.
Composition 	C6H16N2
CAS 	124-09-4
Melting Point 	39-42
Density 	0.93
Molecular Weight	mol. wt. = 116.24
Boiling Point 	205
== Resources and Citations ==
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Hoechst Celanese Corporation, Dictionary of Fiber & Textile Technology (older version called Man-made Fiber and Textile Dictionary, 1965), Hoechst Celanese Corporation, Charlotte NC, 1990
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 4730
Category:Materials database
Hexane

== Description ==
General name for any isomeric form of the hydrocarbon with the formula C6H14. Hexane is the major component in ligroin petroleum distillate. It is used as a solvent for oils, fats, waxes, pressure sensitive adhesives, and as a paint thinner.
Note: The physical parameters for normal (straight chain) hexane are provided with this entry.
== Synonyms and Related Terms ==
hexyl hydride; n-hexane
== Risks ==
* Flammable, fire risk. 
* Inhalation can adversely affect nervous system. 
* Skin contact can cause irritation and redness.
* Cisco Chem: SDS
== Physical and Chemical Properties ==
Soluble in ethanol, acetone and ether. Insoluble in water.
Composition 	CH3(CH2)4CH3
CAS 	100-54-3
Melting Point 	-95 C
Density 	0.65937 g/ml
Molecular Weight	mol. wt. = 86.2
Refractive Index	1.37486
Boiling Point 	68.742 C
== Comparisons ==
==Resources and Citations==
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 4729; ref. index=1.37486 (mixed isomers)
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980 Comment: ref. index=1.372 (n-hexane)
Category:Materials database
Hexanone

== Description ==
Common name for methyl n-butyl ketone (2-hexanone) and ethyl propyl ketone (3-hexanone).
== Synonyms and Related Terms ==
methyl n-butyl ketone; ethyl propyl ketone
== Hazards and Safety ==
* Toxic by ingestion and inhalation. 
* Strong irritant. 
* Flammable. Flash point = 95F (35C)
* ThermoFisher: SDS
== Physical and Chemical Properties ==
Colorless.
==Resources and Citations==
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Richard C. Wolbers, Nanette T. Sterman, Chris Stavroudis, Notes for Workshop on New Methods in the Cleaning of Paintings, J.Paul Getty Trust, Los Angeles, 1990
Category:Materials database
Hexcel ACG

== Description ==
[Hexcel] A brand name for a lightweight structural support panel with an aluminum honeycomb core and an aluminum skin.
== Synonyms and Related Terms ==
aluminum honeycomb panel
==Resources and Citations==
* M.Mecklenburg, J. Webster "Aluminum honeycomb supports: their fabrication and use in painting conservation" Studies in Conservation 22: 177-189, 1977
Category:Materials database
Hi-Sil

== Description ==
[PPG Industries] A registered trademark for a series of hydrated silica powders. Hi-Sil® powders have been used in insecticides as driers. They have also been used in paints and papers as thickeners, fillers, and brighteners.
 
==Resources and Citations==
* PPG Industries: Silica Products
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
Category:Materials database
Hibiscus

== Description ==
Any of several flowering shrubs from the genus Hibiscus. Native to tropical and subtropical regions, the hibiscus is commonly grown in temperate zones as an ornmental landscape plant. Hibiscus fibers have been used in paper mats and woven baskets.
== Synonyms and Related Terms ==
rosemallow; rose of Sharon
==Physical and Chemical Properties==
* Small tree or shrub growing to 3 m with pyramidal crown
* Bark=smooth brown with gray striping
* Leaves = oval with serrated edges (5-8cm long), palmately veined
* Flowers=5 petals, white to red (8-12 cm across) blooming during summer
== Additional Images ==
File:Hsyracusflower.jpg|Hibiscus Hibiscus syracus
File:Hsyracusform.jpg|Hibiscus Hibiscus syracus
==Resources and Citations==
* Encyclopedia Britannica, http://www.britannica.com Comment: "hibiscus." Accessed 24 Jan. 2005 .
* Virginia Tech Dendrology website at www.fw.vt.edu/dendro/dendrology/main.htm (accessed Oct. 8, 2005)
* Wikipedia: http://en.wikipedia.org/wiki/Hibiscus (Accessed Oct. 8, 2005)
Category:Materials database
Hickory bark

== Description ==
Bark from white hickory trees (Hicoria alba) native to the east coast of the United States. Hickory bark will give a dark yellow (cotton) to golden (wool) color using an alum mordant. With a chrome mordant, hickory give a brass color to wool and cotton. Hickory bark dye has good color fastness.
== Synonyms and Related Terms ==
white hickory (Hicoria alba); mockernut
==Resources and Citations==
* R.J. Adrosko, Natural Dyes in the United States, Smithsonian Institution Press, Washington, DC, 1968
* John and Margaret Cannon, Dye Plants and Dyeing, Herbert Press, London, 1994
Category:Materials database
Hide

== Description ==
The raw or dressed skin of a large animal such as an adult cow, horse, or buffalo. A freshly slaughtered hide contains about 65% water and 33% protein (Kuhn 1986). Small amounts of other materials, such as fats, carbohydrates, and minerals, are also present. Tanning chemically changes the skin and makes it resistant to putrefaction. Hides are used for leather and glue production.
== Synonyms and Related Terms ==
skin; rawhide; piel (Esp.); couro (Port.); (dieren)huid, vel (Ned);
== Resources and Citations ==
* Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
* Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
* Wikipedia: http://en.wikipedia.org/wiki/Hide (Accessed Nov. 9, 2005)
Category:Materials database
Hide beetle

== Description ==
A beetle, Dermestes maculatus, with a black back with a thin border of white hairs and a white abdomen with black spots. The hide beetle larvae eat bones, carcasses, wool, wood, cork, and insulation. The adult insects are about 9 to 10 millimeters long. They lay eggs that hatch in 2 to 4 days. The larvae have a black body with broad band in the center of its back. It grows in length to 12 mm. The larval stage lasts 35 to 238 days at which point a cocoon is formed. The adult hatches in 3 to 300 days and lives up to 3 months. The hide beetle is one of two species (the other is the black larder beetle) formerly used to clean bones in museums.
== Synonyms and Related Terms ==
skin beetle
==Resources and Citations==
* MuseumPests.net: Hide Beetle
* Lynda A. Zycherman, J.Richard Schrock, A Guide to Museum Pest Control, FAIC and Association of Systematics Collections, Washington DC, 1988
* Wikipedia: http://en.wikipedia.org/wiki/Hide_beetle
Category:Materials database
Hide glue

== Description ==
A strong, liquid adhesive consisting primarily of gelatin and other protein residues of collagen, keratin, or elastin. Hide glue has been made from ancient times from skins of animals (goats, sheep, goats, cattle, horses, etc.). These agglutinating materials are hydrolyzed and broken down in boiling water; the cooled solution yields a jelly-like substance which is gelatin or glue. The water soluble glue occurs in a wide variety of forms and colors ranging from transparent to opaque and white to brown. Top-quality hide glues are made from rabbitskin and parchment clippings. Hide glues are used in the manufacture of furniture, book binding, abrasive papers, gummed paper and matches. They has also been used in gilding applications, for sizing canvas, for making gesso, for repairing broken china, and as consolidants.
== Synonyms and Related Terms ==
scotch glue (UK); colle de peau (Fr.); grude (Port.); cola de pieles (Esp.); colla animale (It); colla di pelli (It); animal glue; skin glue; nikawa 
==Physical and Chemical Properties==
pH usually 6.5 to 7.5.
==Resources and Citations==
* J.Hubbard, "Animal Glues" in Handbook of Adhesives, I.Skeist (ed.), Van Nostrand Reinhold, New York, 1977, p.139-151.
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 369
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
* Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
* Conservation Support Systems, Catalog, 1997
* Art and Architecture Thesaurus Online, https://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
Category:Materials database
Hide paint

== Description ==
A water-soluble paint that has hide gluefor a medium. Hide paint was used in medieval manuscripts and for decorative work on the interior of houses.
==Resources and Citations==
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
Category:Materials database
Hide split

== Description ==
A leather produced from a thick cowhide that was split or peeled apart to form two thinner skins. The flesh side is called the hide split while the hair side is called the grain split. The hide split is a thin uniform piece of leather with a thickness of about 1.5 mm. The inner surface is often given a suede finish. Some inexpensive leathers are hide splits with an embossed grain pattern.
== Synonyms and Related Terms ==
splits; split hide; split leather; crute (Port.)
==Resources and Citations==
* Hermann Kuhn, Conservation and Restoration of Works of Art and Antiquities, Butterworths, London, 1986
* Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
* American Leather Chemists Association Glossary at www.leatherchemists.org - states that in Oct.3 1996 the FTC decided that split leathers could be called leather
Category:Materials database
Hiding power

== Description ==
A measure of the opacity of a paint or pigment. When expressed numerically, it is the number of square feet over which a gallon of paint, or pound of pigment, can be uniformly spread at a thickness that will provide a specified contrast ratio (ASTM). The contrast ratio is calculated from the colors measured when the paint is placed over both black and white backgrounds.
== Synonyms and Related Terms ==
Deckkraft (Deut.); opacity; covering power
==Resources and Citations==
* R. J. Gettens, G.L. Stout, Painting Materials, A Short Encyclopaedia, Dover Publications, New York, 1966
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 608
* ASTM, "Standard Terminology Relating to Paint, Varnish, Lacquer and Related Products", Annual Book of ASTM Standards, Section 6, Paints, Related Coatings and Aromatics, ASTM, D16, 7-Jan, Jul-96
Category:Materials database
High-performance liquid chromatography

== Description ==
An analytical technique that uses a liquid mobile phase to transport and individual compounds in a mixture. High-performance liquid chromatography (HPLC) uses a mechanical pump to pass a pressurized liquid solvent (mobile phase) through a column filled with a solid sorbent material (stationary phase). A liquid sample contained multiple components is injected into the mobile phase. As the sample passes over the stationary phase, the chemical compounds are separated and resolved, via absorption and desorption. The interaction of the solute with mobile and stationary phases is dependent upon the composition of the solvent gradient vs. the stationary phase. These interactions are physical in nature, such as hydrophobic (dispersive), dipole–dipole and ionic, most often a combination. 
HPLC is an advance version of partition chromatography. Early versions, and school house versions, include paper chromatography and thin layer chromatography. Most commonly, HPLC is useful in the separation of compounds that are too nonvolatile to be separated by gas chromatography. In the cultural heritage area, HPLC is used for the identification of organic dyes. Specialized versions of the technique include Size-exclusion chromatography (used for molecular weight determinations) and Ion chromatography (used to identify trace components in water).
== Synonyms and related terms ==
HPLC; high performance liquid chromatography; high-pressure liquid chromatography; chromatographie en phase liquide à haute performance (Fr.); Flüssigchromatographie (Deut.); size-exclusion chromatography (SEC); ion chromatography (IC)
==Resources and Citations==
* National Gallery of Art, Scientific Research: Glossary of Conservation Terminology
* Wikipedia: High-performance liquid chromatography (Accessed June 2023)
Category:Materials database
High carbon steel

== Description ==
Steel is an alloy of iron with a small percentage of carbon. The amount of carbon present changes the iron from a soft easily worked metal into an extremely hard brittle metal. High carbon or hard steel contains between 0.7-1.5% carbon. It is very hard and brittle. High carbon steel is used to fortify warships and vehicles and to make rails. 
See also carbon steel.
== Synonyms and Related Terms ==
hard steel; ingot steel; acier à haute teneur en carbone (Fr.); hoog koolstof staal (Ned.); aço de alto teor de carbono (Port.)
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 161
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
* Henry Hodges, Artifacts: An Introduction to Early Materials and Technology, Ronald P. Frye, Kingston, Canada, 1988
* The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
Category:Materials database
High density polyethylene

== Description ==
A type of polyethylene composed primarily of long, linear hydrocarbon chains. This produces a tightly packed crystalline polymer with a density greater than 0.94. High density polyethylene (HDPE) is stiffer, harder and less permeable than low density polyethylene. It also has higher tensile strength and lower impact strength. HDPE is used for containers, packaging films, fibers, pipes, and molded pieces. It is also found in toys, bowls, and milk bottle crates.
== Synonyms and Related Terms ==
HDPE; high-density polyethylene; polietileno de alta densidad (Esp.); polyéthylène haute densité (Fr.); polietilene ad alta densità (It.); polietileno de alta densidade (Port.)
== Risks ==
* Dust may cause irritation. 
* Susceptible to stress cracking
* Genesis Polymers: SDS
==Physical and Chemical Properties==
* For a 1 mil film: Oxygen transmission =1368-4256 ml/m2d Water vapor transmission = 57-76 g/m2d 
* Resistant to most solvents except nitric and hydrochloric acids. May swell in oil.
CAS 	9002-88-4
Melting Point	150 C
Density 	>0.94 g/ml
== Comparisons ==
==Resources and Citations==
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002
* Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
* Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
Category:Materials database
High impact polystyrene

== Description ==
A type of polystyrene which has increased toughness. High impact polystyrene is formed with blends with butadiene, acrylonitrile, and/or glass fibers. This results in increased impact strength and heat resistance.
[[[SliderGallery rightalign|aaiHIPSpolystyrene.jpg~FTIR]]]
== Synonyms and Related Terms ==
HIPS; poliestireno de alto impacto (Esp.);
==Resources and Citations==
* Theodore J. Reinhart, 'Glossary of Terms', Engineered Plastics, ASM International, 1988
* Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
* History of plastics: www.me.umist.ac.uk.historyp
Category:Materials database
High intensity discharge lamp

== Description ==
Any of several intense white lamps. High intensity discharge (HID) lamps fall into three main categories: mercury vapor (high pressure), sodium vapor, and metal halide. High intensity discharge lamps are used for lighting streets, parking lots, tunnels and other large areas. In general, these lamps have fair to poor color rendering indices.
== Synonyms and Related Terms ==
HID; vapor discharge lamps; Hochleistungsleuchtstoffröhre (Deut.)
==Resources and Citations==
* Wikipedia: http://en.wikipedia.org/wiki/High-intensity_discharge_lamp (Accessed Feb. 2, 2006)
Category:Materials database
High tenacity rayon

== Description ==
Rayon fibers that have been stretched to align their molecular chains parallel to the filament axis. High tenacity rayon has very high tensile strength and is used for tire cords and fabric reinforcement. High tenacity and high wet modulus rayons are called modal fibers. 
See modal fiber.
== Synonyms and Related Terms ==
modal; rayon de alta tenacidad (Esp.)
== Resources and Citations ==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 655
* J.Gordon Cook, Handbook of Textile Fibres:II Man-made Fibres, Merrow Publishing Co. , Durham, England
Category:Materials database
High test iron

== Description ==
A 19th century term for a type of wrought iron that was heat treated to produce a finer, stronger structure. Now the strength of iron is controlled by the addition of small amounts of alloying metals, such as nickel and chromium.
== Synonyms and Related Terms ==
high strength iron; tension iron
==Resources and Citations==
* G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 158
* Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996
Category:Materials database
Himawari (Sunflower) - center (381 C)

[[[SliderGallery rightalign|Uemura_10-15-2009_381.jpg~Normal|Uemura_10-15-2009_381_UV.jpg~UV]]]{| class="wikitable"
|-	
! scope="row"|Museum number
| 381
|-	
! scope="row"|Uemura number / title
| ; "Haze-some 25"
|-	
! scope="row"|Folder location
| 5th shelf
|-	
! scope="row"|Sample location
| center (381 C)
|-	
! scope="row"|Fiber type
| silk
|-	
! scope="row"|Color
| pale brown
|-	
! scope="row"|Dyestuff (Japanese common name)
| ヒマワリ : Himawari
|-	
! scope="row"|Dye (English common name)
| sunflower
|-	
! scope="row"|Dyestuff (botanical name)
| Helianthus annuus L.
|-	
! scope="row"|Plant part
| flower petal / unspecified
|-	
! scope="row"|Dyestuff extraction
| boiled in water
|-	
! scope="row"|Auxiliary agent in dye bath
| -
|-	
! scope="row"|Mordant
| iron
|-	
! scope="row"|Other auxiliary agent
| -
|-	
! scope="row"|Uemura's date
| Kyoto
|}
Category:Uemura dye archive
Himawari (Sunflower) - top (381 T)

[[[SliderGallery rightalign|Uemura_10-15-2009_381.jpg~Normal|Uemura_10-15-2009_381_UV.jpg~UV]]]{| class="wikitable"
|-	
! scope="row"|Museum number
| 381
|-	
! scope="row"|Uemura number / title
| ; "Haze-some 25"
|-	
! scope="row"|Folder location
| 5th shelf
|-	
! scope="row"|Sample location
| top (381 T)
|-	
! scope="row"|Fiber type
| silk
|-	
! scope="row"|Color
| cream
|-	
! scope="row"|Dyestuff (Japanese common name)
| ヒマワリ : Himawari
|-	
! scope="row"|Dye (English common name)
| sunflower
|-	
! scope="row"|Dyestuff (botanical name)
| Helianthus annuus L.
|-	
! scope="row"|Plant part
| flower petal / unspecified
|-	
! scope="row"|Dyestuff extraction
| boiled in water
|-	
! scope="row"|Auxiliary agent in dye bath
| -
|-	
! scope="row"|Mordant
| alum
|-	
! scope="row"|Other auxiliary agent
| -
|-	
! scope="row"|Uemura's date
| Kyoto
|}
Category:Uemura dye archive
Hindered amine light stabilizer

== Description ==
A class of antioxidant added to varnishes and polymers to minimize photochemical degradation. Hindered amine light stabilizers (HALS) act as a catalyst to deactivate the peroxy radicals. Thus, they are effective without being consumed. Many HALS additives are derivatives of 2,2,6,6-tetramethylpiperidine. (Mills and White 1994). They are often used in polyolefins, polyethylenes, and polyurethane
== Synonyms and Related Terms ==
HALS; Tinuvin 292 [Ciba-Geigy]; Chimasorb 944 [Ciba-Geigy]; Mixxim 57 [Fairmont];
==Resources and Citations==
* R.de la Rie, "Polymer Stabilizers. "A Survey with Reference to Possible Applications in the Conservation Field" Studies in Conservation 33:9-22,1988. 
* J.S. Mills, R.White, The Organic Chemistry of Museum Objects, Butterworth Heinemann, London, 1994.
* John S. Mills, Raymond White, The Organic Chemistry of Museum Objects, Butterworth Heineman, London, 2nd ed., 1994
* R.de la Rie, C.McGlinchy "Stabilized Dammar Picture Varnish" Studies in Conservation 34:137-146
Category:Materials database