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1Published 1997“...U.S. Geological Survey bulletin ;...”
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2
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3Published 1989“...U.S. Geological Survey bulletin ;...”
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4by Van Loenen, Richard E.“...U.S. Geological Survey bulletin ;...”
Published 1989
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5Published 1988“...U.S. Geological Survey bulletin ;...”
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6Published 1988“...U.S. Geological Survey bulletin ;...”
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7Published 1989“...U.S. Geological Survey bulletin ;...”
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8by Van Loenen, Richard E.“...U.S. Geological Survey bulletin ;...”
Published 1991
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9
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10Published 1989“...U.S. Geological Survey bulletin ;...”
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11Published 1989“...U.S. Geological Survey bulletin ;...”
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12by Van Loenen, Richard E.“...U.S. Geological Survey bulletin ;...”
Published 1988
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13by Van Loenen, Richard E.“...U.S. Geological Survey bulletin ;...”
Published 1988
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14by Van Loenen, Richard E.“...U.S. Geological Survey bulletin ;...”
Published 1989
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Government Document eBook -
15by Van Loenen, Richard E.“...U.S. Geological Survey bulletin ;...”
Published 1989
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16by Van Loenen, Richard E.“...U.S. Geological Survey bulletin ;...”
Published 1990
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17
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18Published 1990“...U.S. Geological Survey bulletin ;...”
Government Document Book