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Investigation of Lower Coal Beds in Georges Creek and North Part of Upper Potomac Basins, Allegany and Garrett Counties, Maryland: Reserves, Petrographic and Chemical Characteristics of Coals, and Stratigraphy of Area (Maps)

Series of eleven maps to illustrate coal mines in Maryland, to accompany a report about thinning in the coal beds.
Date: 1949
Creator: Toenges, Albert L.
System: The UNT Digital Library