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1by Schuster, Robert L.“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
Published 2001
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2Published 2001“...U.S. Dept. of the Interior, U.S. Geological Survey,...”
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3Published 1985“...U.S. Dept. of the Interior, Geological Survey ;...”
Government Document Conference Proceeding Microform Book