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41Published 1984“...U.S. Dept. of the Interior, Geological Survey,...”
Government Document Microform Book -
42Published 1984“...U.S. Dept. of the Interior, Geological Survey,...”
Government Document Microform Book -
43by Szabo, B. J.“...U.S. Dept. of the Interior, Geological Survey,...”
Published 1985
Government Document Microform Book -
44by Ponce, David A.“...U.S. Dept. of Interior, Geological Survey ;...”
Published 1985
Government Document Microform Book -
45by Bath, G. D.“...U.S. Dept. of the Interior, Geological Survey,...”
Published 1985
Government Document Microform Book -
46by Throckmorton, Constance K.“...U.S. Dept. of the Interior, Geological Survey,...”
Published 1987
Government Document Microform Book -
47Published 1988“...U.S. Dept. of the Interior, Geological Survey :...”
Government Document Microform Book -
48by Rogers, A. M.“...U.S. Dept. of the Interior, Geological Survey :...”
Published 1987
Government Document Microform Book -
49by Barton, Christopher Cramer“...U.S. Dept. of the Interior, Geological Survey :...”
Published 1989
Government Document Microform Book -
50by Whitfield, Merrick S.“...Dept. of the Interior, U.S. Geological Survey :...”
Published 1993
Government Document Microform Book