Suggested Topics within your search.
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Devonian Geologic Period
Geology, Stratigraphic
293
Stratigraphie
230
Geology
192
Paleontology
130
Géologie
105
Paléontologie
104
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1
by Beecher, Charles Emerson, 1856-1904
Harrisburg : Published by the Board of Commissioners for the Second Geological Survey, 1884
Harrisburg : Published by the Board of Commissioners for the Second Geological Survey, 1884
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2
by Jones, Thomas H. (Thomas Henry), 1912-
Harrisburg, Commonwealth of Pennsylvania Dept. of Internal Affairs, Topographic and Geologic Survey, 1957
Harrisburg, Commonwealth of Pennsylvania Dept. of Internal Affairs, Topographic and Geologic Survey, 1957
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3
by Dawson, John William, 1820-1899
[London] : [publisher not identified], 1863
[London] : [publisher not identified], 1863
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4
5
by Doheny, Edward J.
Bloomington : Printed by authority of the State of Indiana, 1975
Bloomington : Printed by authority of the State of Indiana, 1975
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6
by Dawson, John William, Sir, 1820-1899
Montreal : Dawson Bros., 1871
Montreal : Dawson Bros., 1871
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Book
7
by Chance, H. M. (Henry Martyn), 1856-1937
Harrisburg [Pa.] : Pub. by the Board of Commissioners for the Second Geological Survey, 1880
Harrisburg [Pa.] : Pub. by the Board of Commissioners for the Second Geological Survey, 1880
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8
by Ellison, Robert L.
Harrisburg, PA. : Pennsylvania, Bureau of Topographic and Geological Survey, 1965
Harrisburg, PA. : Pennsylvania, Bureau of Topographic and Geological Survey, 1965
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9
by Enomoto, Catherine B.
Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2016
Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2016
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10
by Schopf, James Morton, 1911-, Schwietering, J. F.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1970
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1970
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17
by Milici, Robert C., 1931-
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2006
Version 1.0.
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2006
Version 1.0.
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18
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20
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