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1Published 1987“...U.S. Dept. of the Interior, Geological Survey,...”
Government Document Microform Book -
2Published 1988“...U.S. Dept. of the Interior, Geological Survey :...”
Government Document Microform Book -
3by Karl, Susan M.“...Dept. of the Interior, U.S. Geological Survey :...”
Published 1985
Government Document Microform Book