Oil and gas map of southwestern Pennsylvania, 1915.
Oil and gas map of southwestern Pennsylvania, 1915.
- Harrisburg, Pa., W. S. Ray, State Printer, 1916.
- 22 p. diagrs. 23 cm.
At head of title: Topographic and Geological Survey of Pennsylvania; Richard R. Hice, State Geologist. Folded map laid in.
gs 16000365
Petroleum--Pennsylvania.
Natural gas--Pennsylvania.
TN872.P4 / A2 1915
At head of title: Topographic and Geological Survey of Pennsylvania; Richard R. Hice, State Geologist. Folded map laid in.
gs 16000365
Petroleum--Pennsylvania.
Natural gas--Pennsylvania.
TN872.P4 / A2 1915