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    Preliminary results of core drilling of Triassic border faults near Riegelsville, Pennsylvania by Ratcliffe, Nicholas M. (Nicholas Morley), 1938-

    Published: Dept. of the Interior, U.S. Geological Survey : [Books and Open-File Reports Section, distributor], 1985
    Description: 2 microfiches : negative, illustrations, maps.
    Government Document Microfilm Book