01006cam a2200277 4500 gs 67000288 DLC 20260227111421.0 700106s1968 dcuab b 00010 eng c gs 67000288 //r852 U.S. Geological Survey Library QE75 .P9 no. 580 TN23.2 .U53 Copy 2. 553/.0974 Geological Survey (U.S.) Mineral resources of the Appalachian region, by the U.S. Geological Survey and the U.S. Bureau of Mines. Washington, U.S. Govt. Print. Off., 1968. xvi, 492 p. illus., maps (part col.) 29 cm. Professional paper 580 Part of illustrative matter fold. in pocket. Bibliography: p. 466-492. Mines and mineral resources Appalachian Region. Geology Appalachian Region. United States. Bureau of Mines. Geological Survey professional paper ; 580. 30374 30374