http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Proceedings of Ninth Annual Convention of the National Association of Artificial Breeders, September 19-22, 1956, Minnesota
Annual Convention of the National Association of Artificial Breeders Minnesota 1956
National Association of Artificial Breeders (NAAB)