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1. Report of progress on the brown hematite ore ranges of Lehigh county, with a description of the mines lying between Emaus, Alburtis and Fogelsville. By Frederick Prime, jr. ...

Notes:
Dix p., 1 l., D73 p. illus., fold. map. 23cm. and At head of title: Second geological survey of Pennsylvania: 1874.
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