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1by Schaefer, Donald H.“...U.S. Geological Survey ;...”
Published 1992
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3by Burbey, Thomas J.“...U.S. Geological Survey,...”
Published 1993
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4
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5by Berger, David L. (David Lemuel), 1958-“...Dept. of the Interior, U.S. Geological Survey :...”
Published 1988
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6by Emme, David H.“...Dept. of the Interior, U.S. Geological Survey ;...”
Published 1991
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7by Burbey, Thomas J.“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1993
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8by Mundorff, Maurice John, 1910-2002“...United States Department of the Interior, Geological Survey,...”
Published 1964
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