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1by Lindgren, Richard J.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2006
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2by Ging, Patricia B.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 1999
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3by Hunt, Andrew G.“...U.S. Dept., of the Interior, U.S. Geological Survey,...”
Published 2010
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4Published 2011“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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5Published 2011“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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6Published 2011“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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7by Perez, Roberto“...U.S. Dept. of the Interior, Geological Survey,...”
Published 1981
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8by Small, Ted A.“...U.S. Dept. of the Interior, Geological Survey ;...”
Published 1984
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9by Perez, Roberto“...U.S. Dept. of the Interior, Geological Survey ;...”
Published 1986
Government Document Book