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1by McMahon, Peter B.“...U.S. Geological Survey,...”
Published 2001
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3by Tanner, Dwight Q.“...U.S. Geological Survey,...”
Published 1996
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4by Jordan, Paul Robert, 1933-“...U.S. Geological Survey,...”
Published 1995
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5by Petersen, James C. (James Carroll), 1952-“...U.S. Department of the Interior, U.S. Geological Survey,...”
Published 1998
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6“...U.S. Department. of the Interior, U.S. Geological Survey,...”
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7“...U.S. Department of the Interior, U.S. Geological Survey,...”
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Government Document eBook