Suggested Topics within your search.
Suggested Topics within your search.
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by Mapel, W. J. (William Jameson), 1922-, Robinson, Charles Sherwood, 1920-, Theobald, P. K. (Paul Kellogg), 1928-
Washington, D.C. : U.S. Geological Survey, 1959
Washington, D.C. : U.S. Geological Survey, 1959
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by Denson, N. M. (Norman MacLaren), 1914-
Reston, Va. : U.S. Geological Survey, 1980
Reston, Va. : U.S. Geological Survey, 1980
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Preliminary geologic map of the Middletown quadrangle, Frederick and Shenandoah counties, Virginia /
[Reston, Va.?] : [Denver, Colo.] : The Survey ; [Books and Open-File Reports Section, distributor], 1993
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by Bohannon, Robert G.
Reston, Va. : U.S. Geological Survey, 1983
Reston, Va. : U.S. Geological Survey, 1983
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by Lemke, Richard Walter, 1913-
Reston, Va. : The Survey, 1977
Reston, Va. : The Survey, 1977
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by Snyder, George L. (George Leonard), 1927-
Washington, D.C. : U.S. Geologicial Survey, 1970
Washington, D.C. : U.S. Geologicial Survey, 1970
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