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1. Report of progress in the Clearfield and Jefferson district of the bituminous coal-fields of western Pennsylvania. By Franklin Platt ...

Notes:
viiiH, 296H p. front., plates (part fold.) maps (part fold.) diagrs. 22 1/2cm., In Pennsylvania. Geological survey. [Report of progress H1, At head of title: Second geological survey of Pennsylvania: 1874., and Appendix: Extracts from H. D. Rogers' Memoir on the coal formation of Pennsylvania ... of the final report of the geology of Pennsylvania.
Data Provider:
University of Michigan. Libraries
Collection:
Harrisburg,: Pub. by the Board of commissioners for the Second geological survey, and Ann Arbor, Michigan: University of Michigan Library

2. Historical sketch of geological explorations in Pennsylvania and other states, by J. P. Leslley. With an appendix containing the annual reports of the state geologist to the board of commissioners.

Notes:
ix a. 3-200A. xxviA p. 22 1/2cm., At head of title: Second geological survey of Pennsylvania: 1874-'5-'6., "The Geological society of Pennsylvania; and what it did to bring about the first Geological survey of the state": p. A29-52A., and fold. map in pocket.
Data Provider:
University of Michigan. Libraries
Collection:
Harrisburg,: Pub. by the Board of commissioners for the Second geological survey, and Ann Arbor, Michigan: University of Michigan Library

3. Report of progress in the Greene and Washington district of the bituminous coal-fields of western Pennsylvania, by J. J. Stevenson. Illustrated with 3 sections and 2 county maps, showing the calculated local depths of the Pittsburg, and Waynesburg coal beds beneath the surface.

Notes:
x K, 420 K, p. plates, fold. maps. 22 1/2cm., (In Pennsylvania. Geological survey, 2d. [Report of progress K], and At head of title: Second geological survey of Pennsylvania: 1875.
Data Provider:
University of Michigan. Libraries
Collection:
Harrisburg,: Pub. by the Board of commissioners for the Second geological survey, and Ann Arbor, Michigan: University of Michigan Library