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1Published 1987Subjects: “...Geology, Stratigraphic Ordovician....”
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2
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3Published 1995Subjects: “...Geology, Stratigraphic Ordovician Congresses....”
Conference Proceeding Book -
4by Leatherock, Constance, 1898-Subjects: “...Geology, Stratigraphic Ordovician....”
Published 1945
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6
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7
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8by Wilson, Charles William, 1905-Subjects: “...Geology, Stratigraphic Ordovician....”
Published 1962
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10by Templeton, Justus Stevens, 1914-Subjects: “...Geology, Stratigraphic Ordovician....”
Published 1963
Book -
11by Willman, H. B. (Harold Bowen), 1901-Subjects: “...Geology, Stratigraphic Ordovician....”
Published 1978
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12
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13Subjects: “...Geology, Stratigraphic Ordovician....”
Book -
14
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15
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16
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17by Weir, Gordon W. (Gordon Whitney), 1922-2011Subjects: “...Geology, Stratigraphic Ordovician....”
Published 1984
Government Document Book -
18by Adkison, W. L.Subjects: “...Geology, Stratigraphic Ordovician....”
Published 1972
Government Document Book -
19by Cressman, Earle Rupert, 1923-Subjects: “...Geology, Stratigraphic Ordovician....”
Published 1973
Government Document Book -
20by Lamar, J. E. (John Everts), 1897-1979Subjects: “...Geology, Stratigraphic Ordovician....”
Published 1928
Book