Author
Geological Survey (U.S.)
112
Geological Survey (U.S.),
65
Geological Survey (U.S.). Water Resources Division
12
United States. Environmental Protection Agency
10
Monroe County (N.Y.). Department of Health
8
United States. Bureau of Reclamation
8
New Jersey. Department of Environmental Protection
7
United States. Army. Corps of Engineers
7
Illinois. Environmental Protection Agency
6
National Water-Quality Assessment Program (U.S.)
5
Sherwood, Donald A.
5
United States. National Park Service
5
Garrett, Ronald G.
4
Schmidt, A. R.
4
United States. Bureau of Land Management
4
Freeman, W. O.
3
Harkness, William E.
3
Indiana. Department of Environmental Management
3
Lambing, John H.
3
Oklahoma City (Okla.)
3
Sprague, Lori A.
3
Alexander, Richard B.
2
Anderson, Peter W.
2
Artman, Joshua C.
2
Aurora (Colo.),
2
Banta, J. Ryan
2
Beck, David A.
2
Blumer, Stephen P.
2
Brazil. Ministério da Marinha
2
Chesapeake Bay Program (U.S.)
2
Colorado River Water Conservation District (Colo.)
2
Colorado. Mined Land Reclamation Division
2
Connecticut. Department of Environmental Protection
2
Crain, Angela S.
2
Crawford, Charles G.
2
Durlin, Randall R.
2
Esralew, Rachel A.
2
Faust, Samuel D. 1929-1997
2
Field, Stephen J. 1935-
2
Fishel, David K.
2
Gaggiani, Neville G.
2
Helinsky, B. M.
2
Houston-Galveston Area Council
2
Hunchak-Kariouk, Kathryn
2
Interstate Commission on the Potomac River Basin
2
James, R. W.
2
Jastram, John D.,
2
Kansas. Department of Health and Environment
2
Kansas. Department of Transportation
2
Kentucky Natural Resources and Environmental Protection Cabinet
2
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