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Author/Creator
- Geological Survey (U.S.)[remove]97
- New York (State). Department of Environmental Conservation10
- Reynolds, Richard J.9
- Southwest Florida Water Management District (Fla.)8
- United States. Environmental Protection Agency7
- Ruhl, J. F.6
- New Jersey. Department of Environmental Protection5
- Scott, Glenn R., 1918-20124
- South Florida Water Management District (Fla.)4
- Wolf, R. J.4
- Adolphson, D. G. (Donald G.), 1928-3
- Casey, George D.3
- Henderson, S. E.3
- United States. Army. Corps of Engineers3
- Watt, Martha K.3
- Ardis, Ann F.2
- Arizona. Department of Water Resources2
- Charles, Emmanuel G.2
- Denver Public Library. Western History/Genealogy Department2
- Georgia2