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Author/Creator
- Geological Survey (U.S.)[remove]215
- National Water-Quality Assessment Program (U.S.)15
- United States. Environmental Protection Agency8
- United States. Bureau of Reclamation6
- United States. Department of Energy6
- South Florida Water Management District (Fla.)5
- Rutledge, A. T.4
- Washington (State). Department of Ecology4
- Air Force Center for Environmental Excellence (U.S.)3
- Arkansas Soil and Water Conservation Commission3
- Clark, Brian R.3
- Czarnecki, John B.3
- Indiana. Department of Environmental Management3
- Lindner-Lunsford, Juli B.3
- Savoie, Jennifer3
- Silcox, Cheryl A.3
- Southwest Florida Water Management District (Fla.)3
- United States. Federal Highway Administration3
- Wahl, Kenneth L.3
- Willoughby, Timothy C.3