http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Proceedings of the Agricultural Impacts on Ground Water--a Conference, August 11-13, 1986, Omaha, Nebraska
Agricultural Impacts on Ground Water--a Conference (1986 : Omaha, Neb.)
Sponsored by the National Water Well Association [and others]