http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
v. 1. Invertebrates.--v. 2. Vertebrates.--v. 3. Cetaceans.--v. 4. Marine birds.
edited by Howard E. Winn and Bori L. Olla.