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1Subjects: “...Geology, Stratigraphic Pennsylvanian....”
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2Published 1956Subjects: “...Geology, Stratigraphic Pennsylvanian....”
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3Published 1986Subjects: “...Geology, Stratigraphic Pennsylvanian....”
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4by Dunbar, Carl O. (Carl Owen), 1891-1979Subjects: “...Geology, Stratigraphic Pennsylvanian....”
Published 1942
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5
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6
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7by Tomlinson, Charles WeldonSubjects: “...Geology, Stratigraphic Pennsylvanian....”
Published 1929
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8by Jewett, John Mark, 1896-1970Subjects: “...Geology, Stratigraphic Pennsylvanian....”
Published 1945
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9
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10by Harbaugh, John Warvelle, 1926-2019Subjects: “...Geology, Stratigraphic Pennsylvanian....”
Published 1960
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11by Jewett, John Mark, 1896-1970Subjects: “...Geology, Stratigraphic Pennsylvanian....”
Published 1941
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12
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13by Jewett, John Mark, 1896-1970Subjects: “...Geology, Stratigraphic Pennsylvanian....”
Published 1965
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14by Wilson, Charles William, 1905-Subjects: “...Geology, Stratigraphic Pennsylvanian....”
Published 1960
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15by Brown, L. F. (Leonard Franklin), 1928-Subjects: “...Geology, Stratigraphic Pennsylvanian....”
Published 1969
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16Published 1958Subjects: “...Geology, Stratigraphic Pennsylvanian....”
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17Subjects: “...Geology, Stratigraphic Pennsylvanian....”
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18
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19Subjects: “...Geology, Stratigraphic Pennsylvanian....”
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20by Moore, Carl A., 1911-1973Subjects: “...Geology, Stratigraphic Pennsylvanian....”
Published 1947
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