http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Standard reference materials catalog price list
Standard reference materials order request system
Standard Reference Materials Program (National Institute of Standards and Technology (U.S.))
National Institute of Standards and Technology (U.S.)
Official version issued annually in print.
NIST standard reference materials. Price list