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1
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2Published 1985“...U.S. Geological Survey,...”
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3Published 1900“...U.S. Geological Survey :...”
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4Published 1900“...U.S. Geological Survey ;...”
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5Published 1900“...U.S. Geological Survey ;...”
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6Published 1900“...U.S. Geological Survey ;...”
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7Published 1900“...U.S. Geological Survey ;...”
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8Published 1900“...U.S. Geological Survey ;...”
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9Published 1900“...U.S. Geological Survey ;...”
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10Published 1900“...U.S. Geological Survey ;...”
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11Published 1900“...U.S. Geological Survey ;...”
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12Published 1900“...U.S. Geological Survey ;...”
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13Published 1900“...U.S. Geological Survey ;...”
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14Published 1986“...U.S. Geological Survey ;...”
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15Published 1992“...U.S. Geological Survey ;...”
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16by Dutton, Carl E. (Carl Evans), 1904-“...U.S. Geological Survey,...”
Published 1970
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17by Dutton, Carl E. (Carl Evans), 1904-“...U.S. Geological Survey,...”
Published 1967
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18Published 1971“...U.S. Geological Survey,...”
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19
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20Published 1900“...U.S. Geological Survey ; Wisconsin Geological and Natural History Survey,...”
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