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ProQuest (Firm)
108 results
108
Library of Congress. Congressional Research Service
77 results
77
United States. National Aeronautics and Space Administration
21 results
21
Geological Survey (U.S.)
20 results
20
Pinelli, Thomas E.
12 results
12
NetLibrary, Inc
10 results
10
U.S. Coast and Geodetic Survey
9 results
9
United States. Department of Defense
8 results
8
ebrary, Inc
8 results
8
Marshall, R. B. (Robert Bradford), 1867-1949
7 results
7
Langley Research Center
6 results
6
United States. Congress. House. Committee on Rivers and Harbors
6 results
6
Blair, Johnny
5 results
5
Lyberg, Lars
5 results
5
Simpson, J. H. (James Hervey), 1813-1883
5 results
5
United States. Bureau of Land Management
5 results
5
Barclay, Rebecca O.
4 results
4
Biemer, Paul P.
4 results
4
Czaja, Ronald
4 results
4
Kennedy, John M.
4 results
4
Lehtonen, Risto
4 results
4
National Geodetic Information Center (U.S.)
4 results
4
Pahkinen, Erkki
4 results
4
Rand Corporation
4 results
4
Slezer, John, d. 1714
4 results
4
Transport and Road Research Laboratory
4 results
4
United States. Army. Corps of Engineers
4 results
4
United States. Bureau of Labor Statistics
4 results
4
United States. Federal Highway Administration
4 results
4
United States. General Accounting Office
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United States
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102
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Africa, West
2 results
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Cascade Range
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Colorado
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Colorado River (Colo.-Mexico)
2 results
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Colorado River Watershed (Colo.-Mexico)
2 results
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Delaware River (N.Y.-Del. and N.J.)
2 results
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Dorset (England)
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Europe
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