http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Anti-composition tables for carbon compounds (CH, CHO, CHS, & CHOS)
Commonwealth Scientific and Industrial Research Organization (Australia)
compiled by H. H. Hatt, T. Pearcey & A. Z. Szumer for the Commonwealth Scientific and Industrial Research Organization, Australia.