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1
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2by Pierson, Charles Thomas, 1918-“...Geological Survey bulletin ;...”
Published 1980
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3
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4by Tschanz, C. M., 1926-“...Geological Survey bulletin ;...”
Published 1958
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5by Freeman, Val L., 1926-“...Geological Survey bulletin ;...”
Published 1956
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6by Johnson, Ross B., 1919-“...Geological Survey bulletin ;...”
Published 1969
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7
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8
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9by Santos, Elmer S.“...Geological Survey bulletin ;...”
Published 1975
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10by Johnson, Maureen G.“...Geological Survey bulletin ;...”
Published 1972
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11by Wright, Ann Finley“...Geological Survey bulletin ;...”
Published 1978
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12
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13Published 1988“...U.S. Geological Survey bulletin ;...”
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14by Lovering, T. G. (Tom Gray), 1921-1996“...U.S. Geological Survey bulletin ;...”
Published 1987
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15by McIntyre, David H.“...U.S. Geological Survey bulletin ;...”
Published 1988
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16by Lovering, T. G. (Tom Gray), 1921-1996“...U.S. Geological Survey bulletin ;...”
Published 1989
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17by Miller, Ralph L. (Ralph LeRoy), 1909-1991“...U.S. Geological Survey bulletin ;...”
Published 1991
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18Published 1991“...U.S. Geological Survey bulletin ;...”
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19Published 1995“...U.S. Geological Survey bulletin ;...”
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20by Armstrong, Augustus K.“...U.S. Geological Survey bulletin ;...”
Published 1988
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