Preliminary report on the mineralogy of Pennsylvania, [electronic resource] by F. A. Genth. With an appendix on the hydrocarbon compounds, by Samuel P. Sadtler.
Imprint
Harrisburg, Pub. by the Board of commissioners for the Second geological survey, 1875.
At head of title: Second geological survey of Pennsylvania: 1874.
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.