http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
v. 1. C₁ to C₄ compounds -- v. 2. C₅ to C₇ compounds -- v. 3. C₈ to C₂₈ compounds -- v. 4. Inorganic compounds and elements.
Includes bibliographical references and indexes.
Library of physico-chemical property data