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1Published 1999“...U.S Dept. of the Interior, U.S. Geological Survey ; The Survey,...”
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2Published 2000“...[U.S. Dept. of the Interior, U.S. Geological Survey],...”
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3Published 2001“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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Government Document Photo -
4by Barbie, Dana L.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2000
Abstract:
Main report:
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5Published 2007“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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6Published 2007“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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Government Document Electronic Photo -
7by Barras, John A.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2007
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8Published 2009“...U.S. Dept., of the Interior, U.S. Geological Survey,...”
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Government Document Map Photo -
9by Stoffer, Philip W. (Philip Ward)“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2008
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Government Document Photo