Pre-Cambrian geology and mineral resources of the Delaware Water Gap and Easton quadrangles, New Jersey and Pennsylvania - Bayley, William Shirley, 1861-1943. (Washington, U.S. Gov't. Print. Off., 1941)
At head of title: United States Department of the Interior ... Geological Survey ...
Folded map in pocket.
Bibliographical foot-notes.
Keywords: Geology -- New Jersey; Geology -- Pennsylvania; Mines and mineral resources -- New Jersey; Mines and mineral resources -- Pennsylvania; Geology, Stratigraphic -- Precambrian; Delaware Water Gap (N.J. and Pa.)