Author
Films for the Humanities & Sciences (Firm)
59
Infobase
59
Geological Survey (U.S.)
42
Geological Survey (U.S.),
10
U.S. Fish and Wildlife Service
8
United States. Bureau of Reclamation
8
Wild Hare Productions LLC
8
Deutsche Welle
6
United States. Environmental Protection Agency. Office of Water
6
United States. Environmental Protection Agency
5
Agency for Instructional Technology
4
TVE International
4
United States. Bureau of Indian Affairs
4
Butler, David L. 1946-
3
Cambridge Educational (Firm)
3
Great Lakes Environmental Research Laboratory
3
National Geographic Television & Film
3
National Water-Quality Assessment Program (U.S.)
3
New Atlantis (Firm)
3
SpringerLink (Online service)
3
Alpers, Charles N., 1958-
2
Chapra, Steven C.
2
Domagalski, Joseph L.
2
Elder, John F., 1942-
2
Eugene (Or.)
2
Lane Council of Governments (Or.)
2
Lang, Gregory A.
2
Maryland. Department of Natural Resources
2
McNelly, Gregory D.
2
Moyers, Bill D.
2
Network Ireland Television
2
Public Affairs Television (Firm)
2
Reid, David Fulton
2
Risk Reduction Engineering Laboratory (U.S.)
2
ScienceDirect (Online service)
2
Smith, Kathleen S.
2
Sukol, Roxanne Breines
2
Taylor, Howard E. 1945-
2
Telliard, William A.
2
United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Coast Guard and Maritime Transportation
2
United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Water Resources and Environment
2
United States. Congress. Senate. Committee on Commerce, Science, and Transportation
2
United States. Environmental Protection Agency. Great Lakes National Program Office
2
Video Education Australasia
2
Workshop on Innovative Technologies for Treatment of Contaminated Sediments
2
Workshop on Innovative Technologies for Treatment of Contaminated Sediments Cincinnati, Ohio)
2
Yochum, Steven E.
2
601 Production Ltd
1
AQUA TERRA Consultants
1
Adams, Jeffrey D.
1
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