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Author/Creator
- Geological Survey (U.S.)316
- Feltis, R. D. (Richard D.), 1930-18
- Maryland Geological Survey17
- Mack, Frederick K.16
- New York (State). Department of Environmental Conservation15
- Southwest Florida Water Management District (Fla.)15
- Pettijohn, Robert A.12
- Arkansas Soil and Water Conservation Commission11
- Harris-Galveston Coastal Subsidence District (Tex.)11
- Kasmarek, Mark C.11
- United States. Environmental Protection Agency11
- Arkansas Geological Commission10
- Busby, John F.10
- Ortiz, A. G.10
- Mississippi. Office of Land and Water Resources9
- National Regional Aquifer Systems Analysis Program (U.S.)9
- Andreasen, David C.8
- Curtin, Stephen E.8
- Mississippi. Bureau of Land and Water Resources8
- New Jersey. Department of Environmental Protection8