Water Environment Federation, 1992

U.S. Environmental Protection Agency, Water Engineering Research Laboratory, 1985

American Water Works Association, 1985 Paperback

American Water Works Association, 1993 Unknown Binding

National Academy of Sciences, 1978 Unknown Binding

Environmental Protection Agency, Office of Research and Development, Municipal Environmental Research Laboratory, for sale by the National Technical Information Service, 1980

1983

Environmental Protection Agency, Office of Research and Development, Municipal Environmental Research Laboratory, for sale by the National Technical Information Service, 1978

Dept. of the Interior, Geological Survey, 1978

Environmental Protection Agency, Office of Water & Waste Management, 1979

U.S. Environmental Protection Agency, Office of Water Program Operations, 1982

U.S. Environmental Protection Agency, Center for Environmental Research Information, 1983

U.S. Dept. of Agriculture, Agricultural Research Service, Supt. of Docs., U.S. G.P.O., distributor, 1984

U.S. Environmental Protection Agency, Office of Research and Development, Office of Health and Environmental Assessment, Environmental Criteria and Assessment Office, 1985

1980

U.S. Environmental Protection Agency, Office of Research and Development, Center for Environmental Research Information, Technology Transfer, 1987 [microform] :

1981

1979

General Accounting Office, 1978 [microform] :

U.S. Environmental Protection Agency, Risk Reduction Engineering Laboratory, 1990 [microform] :