Oil and gas field atlas of the Butler quadrangle, Pennsylvania
By: compiled by William S. Lytle and Lillian A. Heeren
Contributors: Lytle, William S; Heeren, Lillian A
Series: Special bulletin / Pennsylvania. Bureau of Topographic and Geologic Survey -- 7; Special bulletin (Pennsylvania. Bureau of Topographic and Geologic Survey) -- 7
Publisher: Pennsylvania Department of Internal Affairs, Topographic and Geologic Survey
Published: 1955
Place of publication: Harrisburg
Language: eng
Number of pages: 26
Subjects: Petroleum -- Pennsylvania -- Butler Quadrangle -- Maps; Natural gas -- Pennsylvania -- Butler Quadrangle -- Maps
Genres: Maps
Notes: Cover title

At head of title:  Pennsylvania Geological Survey, 4th series

Text on p. [2] of cover