Author
Geological Survey (U.S.)
ProQuest (Firm)
105 results
U.S. Customs Service
98 results
Mexico. Dirección General de Geografía del Territorio Nacional
97 results
National Water-Quality Assessment Program (U.S.)
63 results
United States. Bureau of Mines
43 results
National Science Foundation (U.S.)
24 results
United States. Environmental Protection Agency
24 results
United States. Bureau of Land Management
22 results
United States. Federal Emergency Management Agency
21 results
Hamilton, Pixie A.
17 results
National Earthquake Hazards Reduction Program (U.S.)
17 results
U.S. Fish and Wildlife Service
17 results
Schmoker, J. W.
16 results
United States. National Oceanic and Atmospheric Administration
16 results
Maryland Geological Survey
14 results
United States. Bureau of Mines. Branch of Data Collection and Coordination
14 results
United States. Department of Energy
14 results
Hays, Walter W.
13 results
Peddie, Norman W.
12 results
Roehler, Henry W.
12 results
Schroder, L. J.
12 results
Alexander, Richard B.
11 results
Mack, Frederick K.
11 results
Pettijohn, Robert A.
11 results
United States. Department of the Interior
11 results
Busby, John F.
10 results
Geological Survey (U.S.). National Mapping Division
10 results
Mueller, David K.
10 results
Ryder, Robert T.
10 results
United States. Forest Service
10 results
Dyman, T. S.
9 results
Gilliom, Robert J.
9 results
Gordon, J. D.
9 results
Hirsch, Robert M.
9 results
National Regional Aquifer Systems Analysis Program (U.S.)
9 results
Attanasi, E. D.
8 results
Energy Resource Surveys Program (Geological Survey)
8 results
King, Philip B., 1903-1987
8 results
Kitzmiller, Carla
8 results
National Institute of Standards and Technology (U.S.)
8 results
National Water-Quality Laboratory (U.S.)
8 results
United States. Bureau of Mines. Branch of Metals
8 results
Willoughby, Timothy C.
8 results
Zogorski, John S.
8 results
Alley, William M.
7 results
Andreasen, David C.
7 results
Barrett, P. J. (Peter J.)
7 results
Curtin, Stephen E.
7 results
Dolton, G. L.
7 results
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