http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Chemistry of 1,2,3-triazines and 1,2,4-triazines, tetrazines, and pentazines
xxv, 1135 pages : illustrations ; 24 cm.
Chemistry of heterocyclic compounds ; v. 33