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1by Twenter, F. R.“...U.S. Dept. of the Interior, Geological Survey,...”
Published 1981
Government Document Book -
2
Government Document Serial -
3Published 1982“...U.S. Dept. of the Interior, Geological Survey ;...”
Government Document Serial -
4Published 1982“...U.S. Dept. of the Interior, Geological Survey ;...”
Government Document Microform Serial -
5Published 1982“...U.S. Dept. of the Interior, Geological Survey ;...”
Government Document Microform Serial