http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
a sourcebook on issues and interrelationships : proceedings of a workshop, January 4-5, 1989, Washington, D.C
Winrock International Institute for Agricultural Development
edited by Wayne E. Swegle and Polly C. Ligon.