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    Pre-Cambrian geology and mineral resources of the Delaware Water Gap and Easton quadrangles, New Jersey and Pennsylvania by Bayley, William Shirley, 1861-1943

    Published: United States Department of the Interior, Geological Survey, 1941
    Description: 1 online resource (v, 98 pages, 5 pages of plates) : illustrations, maps (some color).
    Government Document eBook