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1by Skrobialowski, Stanley C.“...U.S. Geological Survey ;...”
Published 1997
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2by Weems, R. E. (Robert E.)“...U.S. Geological Survey ;...”
Published 1998
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6by Hopkins, Herbert T., 1923-“...U.S. Geological Survey ;...”
Published 1984
Government Document Book -
7by Luepke, Gretchan“...U.S. Geological Survey ;...”
Published 1990
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8by Larson, Jerry D.“...U.S. Geological Survey ;...”
Published 1991
Government Document Microform Book -
9Published 1992“...U.S. Geological Survey ;...”
Government Document Book -
10Published 1992“...U.S. Geological Survey ;...”
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13Stratigraphic distribution and bibliography of fossil fish, amphibians, and reptiles from Virginia /by Weems, R. E. (Robert E.)“...U.S. Geological Survey ;...”
Published 1993
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14by Prugh, Byron J.“...U.S. Geological Survey ;...”
Published 1993
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15by Bell, C. F. (Clifton F.)“...U.S. Geological Survey ;...”
Published 1994
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18by Robbins, Eleanora I. (Eleanora Iberall), 1942-“...[U.S. Geological Survey],...”
Published 1996
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19Published 1981“...U.S. Geological Survey,...”
Map -
20by Kunk, Michael J.“...U.S. Geological Survey :...”
Published 1999
Government Document Microform Book