http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
national symposium, September 26 and 27, 1974 : [proceedings]
National Symposium on Drinking Water (1974 : Raleigh, N.C.)
"Sponsored by the Research Triangle universities, Duke University, North Carolina State University, University of North Carolina at Chapel Hill; U.S. Environmental Protection Agency, in cooperation with the American Society of Civil Engineers [and others]"