Report of progress in the Clearfield and Jefferson district of the bituminous coal-fields of western Pennsylvania. [electronic resource] By Franklin Platt ...
Imprint
Harrisburg, Pub. by the Board of commissioners for the Second geological survey, 1875.
In Pennsylvania. Geological survey. [Report of progress H1
At head of title: Second geological survey of Pennsylvania: 1874.
Appendix: Extracts from H. D. Rogers' Memoir on the coal formation of Pennsylvania ... of the final report of the geology of Pennsylvania.
Reproduction
Electronic text and image data. Ann Arbor, Mich. : University of Michigan, Digital Library Initiatives, 2000. Includes both TIFF files and keyword searchable text. [Making of America] This volume is made possible by a grant from the Andrew W. Mellon Foundation as part of Making of America IV: the American voice, 1850-1877.
