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1by McCartan, Lucy“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1991
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2Published 1990“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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3Published 1996“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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4Published 1997“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
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5by Force, Eric R.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 1982
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6Published 2004“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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7by Nuttli, Otto W.“...Dept. of the Interior, U.S. Geological Survey ;...”
Published 1986
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8by Obermeier, Stephen F.“...Dept. of the Interior, U.S. Geological Survey :...”
Published 1987
Government Document Microform Book