http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
prepared by Denver Wool Laboratory of the Standardization Branch, Livestock Division, Agricultural Marketing Service, U.S. Dept. of Agriculture.
University of Wyoming assisted with the pictures.
Washington, D.C. : U.S. Dept. of Agriculture, 1960
Marketing bulletin (Washington, D.C.) ; no. 10