Report of progress in the Clearfield and Jefferson district of the bituminous coalfields of western Pennsylvania
By: by Franklin Platt.
Series: Pennsylvania. Geological survey, 2d. [Report of progress -- H]; Report of progress (Geological Survey of Pennsylvania) -- H.
Publisher: Pub. by the Board of Commissioners of the Second geological survey
Published: 1875
Place of publication: Harrisburg
Language: eng
Number of pages: 296
Subjects: Geology -- Pennsylvania; Coal -- Pennsylvania
Notes: At head of title: Second geological survey of Pennsylvania: 1874.

Appendix: Extracts from H.D. Rogersʹ Memoir on the coal formation of Pennsylvania ... of the final report of the geology of Pensylvania.