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1
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2by Slagle, Steven E.“...Dept. of the Interior, U.S. Geological Survey ;...”
Published 1988
Government Document Book -
3by Parrett, Charles“...Dept. of the Interior, U.S. Geological Survey :...”
Published 1989
Government Document Book -
4by Parrett, Charles“...U.S. Dept. of the Interior, U.S. Geological Survey ;...”
Published 1990
Government Document Book