http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
List of sires proved in dairy-herd-improvement associations, 1950
Division of Dairy Herd Improvement Investigations.
compiled by Division of Dairy Herd Improvement Investigations, Bureau of Dairy Industry, Agricultural Research Administration.
Format not distributed to depository libraries.
Agriculture handbook (United States. Department of Agriculture) ; no. 7