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Author/Creator
- Geological Survey (U.S.)[remove]617
- United States. Environmental Protection Agency15
- United States. Bureau of Land Management13
- United States. Federal Highway Administration13
- United States. Bureau of Reclamation12
- United States. Army. Corps of Engineers11
- United States. Department of Energy10
- Arkansas Soil and Water Conservation Commission9
- Green, W. Reed8
- Tasker, Gary D.8
- Barlow, Paul M.7
- Hill, Mary Catherine7
- Holtschlag, David J.7
- Jobson, Harvey E.7
- Kernodle, John Michael7
- South Florida Water Management District (Fla.)7
- Southwest Florida Water Management District (Fla.)7
- Albuquerque (N.M.). Dept. of Public Works6
- Czarnecki, John B.6
- Konikow, Leonard F.6