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1Published 2007“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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2by Syed, Atiq U.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2005
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3by Hoard, C. J. (Christopher J.)“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2009
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Government Document eBook