Geology and mineral resources of the Quakertown-Doylestown district, Pennsylvania and New Jersey /
Bascom, Florence,1862-1945.
Wherry, Edgar Theodore,1885-
Stose, George Willis,1869-1960.
Jonas, Anna Isabel,1881-
Washington : Government Printing Office,
1931.
Includes index.
Geology
Geology
Mines and mineral resources
Mines and mineral resources