http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
proceedings of the seventh national conference, 1980
National Conference on Individual Onsite Wastewater Systems 1980 : Ann Arbor, Mich.)
sponsored by National Sanitation Foundation and U.S. Environmental Protection Agency, Office of Water Program Operation ; edited by Nina I. McClelland and Joe L. Evans.
Includes bibliographical references and index.