http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Evaluation of the USDA soybean germplasm collection
Evaluation of the United States Department of Agriculture soybean germplasm collection: maturity groups 000--IV (FC 01.547--PI 266.807)
Technical bulletin (United States. Department of Agriculture) ; no. 1844