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1
[Washington, D.C.] : Federal Water Quality Administration, 1970

Government Document Conference Proceeding Book
2
by Cole, Richard A., 1942-
Duluth, Minn. : Springfield, Va. : Environmental Protection Agency, Office of Research and Development, Environmental Research Laboratory ; For sale by the National Technical Information Service, 1978

Government Document Book
3
[Washington] Federal Water Pollution Control Administration, U.S. Dept. of the Interior 1967

Government Document Conference Proceeding Book
4
[Washington, D.C.] : [U.S. Dept. of the Interior, Federal Water Pollution Control Administration], 1968

Government Document Conference Proceeding Book
5
[Washington] U.S. Dept. of Health, Education, and Welfare, Public Health Service 1965

Government Document Conference Proceeding Book
6
[Washington] Federal Water Pollution Control Administration 1966

Government Document Conference Proceeding Book
8
[Washington] Federal Water Pollution Control Administration, U.S. Dept. of the Interior 1967

Conference Proceeding Book
9
[Chicago] Federal Water Quality Administration, Great Lakes Regional Office, 1970

Book
10
[Washington, DC] : U.S. Department of the Interior, Federal Water Quality Administration, 1970

Government Document Book
11
by Cole, Richard A., 1942-
Duluth, Minnesota : Environmental Protection Agency, Office of Research and Development, Environmental Research Laboratory, 1978

Government Document Book
12
by Collins, Ralph P.
Washington, D.C. : United States Environmental Protection Agency, Office of Research and Monitoring, 1971

Government Document Book
13
Washington, D.C. : United States Government Printing Office, 1968

Government Document Conference Proceeding Book
14
[Place of publication not identified] 1969

Book
15
[Washington] : Dept. of Health, Education, and Welfare, Public Health Service, Division of Water Supply and Pollution Control, 1965

Government Document Book
16
[Place of publication not identified] : [publisher not identified], 1969

Book
17
[Washington] : Federal Water Pollution Control Administration, 1969

Government Document Conference Proceeding Book