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Report of progress in the counties of York, Adams, Cumberland, and Franklin. Illustrated by maps and cross-sections showing the magnetic and micaceous ore belt near the western edge of the Mesozoic sandstone and the two Azoic systems constituting the mass of the South mountains. With a preliminary discussion on the Dillsburg ore bed, and a catalogue of specimens collected in 1875.

Main Author: Frazer, Persifor, 1844-1909.
Format: Book
Published: Harrisburg, Pub. by the Board of commissions for the Second geological survey, 1877.
Series:Pennsylvania. Geological survey, 2d. [Report of progress C2]
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