TY  - BOOK
ED  - Pennsylvania.
TI  - Oil and gas map of southwestern Pennsylvania, 1915
AV  - TN872.P4 A2 1915
PY  - 1916///
CY  - Harrisburg, Pa.
PB  - W. S. Ray, State Printer
KW  - Petroleum
KW  - Pennsylvania
KW  - Natural gas
N1  - At head of title: Topographic and Geological Survey of Pennsylvania; Richard R. Hice, State Geologist; Folded map laid in
ER  -