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1by Erlich, Edward“...U.S. Dept. of the Interior, Geological Survey :...”
Published 1986
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2Published 1996“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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3by McGimsey, Robert G.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2004
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4by McGimsey, Robert G.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 1996
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5by Neal, Christina, 1959-“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 1997
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6Published 2005“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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7Published 2008“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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8
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9
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