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1by Verbeek, Earl R.“...U.S. Dept. of the Interior, Geological Survey,...”
Published 1988
Government Document Microform Book -
2by Wenrich, Karen J.“...U.S. Dept. of the Interior, Geological Survey :...”
Published 1986
Government Document Microform Book -
3Published 1989“...U.S. Dept. of the Interior, Geological Survey :...”
Government Document Microform Book