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	1.	Report of progress 1874-1889, A-Z. by Geological Survey of Pennsylvania Pennsylvania. Board of Commissioners for the Second Geological Survey Material type: Text; Format: print ; Literary form: Not fiction Publication details: Harrisburg, Board of Commissioners for the Second Geological Survey, 1875-91 Availability: No items available. Add to cart (remove)
	2.	The geology of Lehigh and Northampton Counties. General introduction by J.P. Lesley. Slate belt and quarries, by R.N. [i.e. H.] Sanders. Water gaps, by H.M. Chance. Limestone belt and iron ore mines, by F. Prime. Itinerary survey of the mountains, by C.E. Hall. by Geological Survey of Pennsylvania D'Invilliers, Edward Vincent, 1857-. Geology of the South Mountain belt of Berks Co Series: Report of progress (Geological Survey of Pennsylvania) ; D3, v. 1. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Harrisburg, Board of Commissioners for the Second Geological Survey, 1883 Availability: No items available. Add to cart (remove)
	3.	Geological Survey of Pennsylvania. Final report ordered by Legislature, 1891. A summary description of the geology of Pennsylvania. by Geological Survey of Pennsylvania Ingham, William A. (William Armstrong), 1827-1913. A list of, and brief guide to, the publications of the Pennsylvania geological survey, 1874-1895 [comp.] Material type: Text; Format: print ; Literary form: Not fiction Publication details: Harrisburg, Board of Commissioners for the Geological Survey, 1892-95 Availability: No items available. Add to cart (remove)

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