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1by Erickson, B. M.“...U.S. Dept. of the Interior, Geological Survey,...”
Published 1986
Government Document Microform Book -
2by Coel, R. J.“...U.S. Dept. of the Interior, Geological Survey,...”
Published 1991
Government Document Microform Book -
3Published 1992“...U.S. Dept. of the Interior, U.S. Geological Survey :...”
Government Document Microform Book