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1by Veenhuis, Jack E.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1990
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2by Ging, Patricia B.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1996
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3Published 2006“...U.S. Dept. of the INterior, U.S. Geological Survey,...”
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4by Mahler, B. J. (Barbara June), 1959-“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2011
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5Published 1984“...U.S. Dept. of the Interior, Geological Survey ;...”
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6Published 1983“...U.S. Dept. of the Interior, Geological Survey,...”
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7by Welborn, C. T.“...Dept. of the Interior, U.S. Geological Survey ;...”
Published 1987
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8by Veenhuis, Jack E.“...U.S. Dept. of the Interior, Geological Survey ;...”
Published 1986
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9Published 1988“...Dept. of the Interior, U.S. Geological Survey ;...”
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10by Gordon, J. D.“...U.S. Dept. of the Interior, Geological Survey :...”
Published 1987
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