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1by O'Sullivan, Robert Brett, 1923-“...U.S. Geological Survey bulletin ;...”
Published 1992
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2by O'Sullivan, Robert Brett, 1923-“...U.S. Geological Survey bulletin ;...”
Published 1992
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3
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4by Owen, Douglass E.“...U.S. Geological Survey bulletin ;...”
Published 1989
Government Document Book -
5by Hansley, Paula L.“...U.S. Geological Survey bulletin ;...”
Published 1990
Government Document Book -
6by Aubrey, William M.“...U.S. Geological Survey bulletin ;...”
Published 1992
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7
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8by Hansley, Paula L.“...U.S. Geological Survey bulletin ;...”
Published 1990
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9
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10by Hansley, Paula L.“...U.S. Geological Survey bulletin ;...”
Published 1993
Government Document Book