http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Proceedings of a symposium held 1-3 June 1976 at the National Fertilizer Development Center, Tennessee Valley Authority, Muscle Shoals, Alabama
American Society of Agronomy;Crop Science Society of America;Soil Science Society of America
Writers: Edit. F.E.Khasawneh and others.