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.
Folded map in pocket.
Bibliographical foot-notes.
Geology
Geology
Mines and mineral resources
Mines and mineral resources
Geology, Stratigraphic