Oil resources in coal and carbonaceous shales of Pennsylvania.
Contributors: Pennsylvania. Bureau of Topographic and Geologic Survey.
Publisher: Department of Internal Affairs, Bureau of Topographic and Geological Survey
Published: 1923
Place of publication: [Harrisburg, Pa.]
Language: eng
Number of pages: 119
Subjects: Petroleum; Oil-shales; Coal -- Pennsylvania
Notes: At head of title: Pennsylvania Geological Survey, fourth series.