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2by Schreffler, Curtis L.“...U.S. Geological Survey,...”
Published 1996
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3
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4by Sloto, Ronald A.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1996
Government Document Book -
5by Sloto, Ronald A.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1998
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6by Bird, Philip H.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 2002
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7by Sloto, Ronald A.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2010
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8“...U.S. Department of the Interior, U.S. Geological Survey,...”
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9by Schreffler, Curtis L.“...U.S. Dept. of the Interior, U.S. Geological Survey ; Earth Science Information Center, Open-File...”
Published 1996
Government Document Book