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Author/Creator
- Geological Survey (U.S.)255
- Maryland Geological Survey23
- Feltis, R. D. (Richard D.), 1930-17
- Mack, Frederick K.17
- Maryland. Tidewater Administration16
- Andreasen, David C.11
- Curtin, Stephen E.11
- New York (State). Dept. of Environmental Conservation11
- United States. Environmental Protection Agency11
- Imes, Jeffrey L.8
- Mississippi. Office of Land and Water Resources8
- Maryland. Resource Assessment Administration7
- Mississippi. Bureau of Land and Water Resources7
- Wolf, R. J.7
- Casey, George D.6
- New Hampshire. Water Division6
- New Jersey. Dept. of Environmental Protection6
- Burt, David E.5
- Darden, Daphne5
- DeJarnette, Sydney S.5