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Author/Creator
- Geological Survey (U.S.)76
- New York (State). Department of Environmental Conservation16
- Mack, Frederick K.7
- Maryland Geological Survey7
- Maryland Power Plant Research Program6
- Bugliosi, Edward F.5
- Casey, George D.5
- Reynolds, Richard J.5
- Andreasen, David C.4
- Brockman, Allen R. (Allen Richard), 1961-4
- Curtin, Stephen E.4
- Lyke, William L.4
- North Carolina. Department of Natural Resources and Community Development4
- Winner, M. D., Jr.4
- Ackerman, D. J.3
- Arkansas Geological Commission3
- Arkansas Soil and Water Conservation Commission3
- Chester County Water Resources Authority3
- Garges, John A.3
- Louisiana. Department of Transportation and Development3