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1Published 1991“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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2Published 2003“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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3Published 2006“...U.S. Dept. of the Interior, U.S. Geological Survey;...”
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4by Flanagan, Sarah M.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2012
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5Published 1999“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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6Published 1999“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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7by Sirkin, Leslie A.“...Dept. of the Interior, U.S. Geological Survey ;...”
Published 1987
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8by Ayers, M. A. (Mark A.)“...U.S. Dept. of the Interior, U.S. Geological Survey ; Free on application to the U.S. Geological...”
Published 2000
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