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Reston, Va: U.S. Geological Survey, 2016
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Reston, Va.: U.S. Dept. of the Interior, U.S. Geological Survey, 2015
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Reston, Va.: U.S. Dept. of the Interior, U.S. Geological Survey, 2013
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Washington: U. S. Gov. Print. Off., 1987
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Reston, Virginia: U.S. Geological Survey, 2012
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Reston, Virginia: U.S. Department of the Interior, U.S. Geological Survey, 2013
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Reston, Va: U.S. Dept. of the Interior, U.S. Geological Survey, 2010
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Argonne: Argonne National Laboratory, december 2007