http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
their significance and methods of enumeration
International Committee on Microbiological Specifications for Foods
compiled and edited by F. S. Thatcher [and] D. S. Clark. Sponsored by the International Committee on Microbiological Specifications for Foods ... of the International Association of Microbiological Societies.