01006cam a2200277   4500001001300000003000400013005001700017008004100034010002300075040003500098050002200133051002600155082001400181110002900195245011000224260004800334300005000382490002800432500004900460504003000509650005300539650003300592710003700625830004900662999001700711gs 67000288 DLC20260227111421.0700106s1968    dcuab    b    00010 eng c  ags 67000288 //r852  aU.S. Geological Survey Library0 aQE75b.P9 no. 580  aTN23.2b.U53cCopy 2.  a553/.097420aGeological Survey (U.S.)10aMineral resources of the Appalachian region,cby the U.S. Geological Survey and the U.S. Bureau of Mines.0 aWashington,bU.S. Govt. Print. Off.,c1968.  axvi, 492 p.billus., maps (part col.)c29 cm.1 aProfessional paperv580  aPart of illustrative matter fold. in pocket.  aBibliography: p. 466-492. 0aMines and mineral resourceszAppalachian Region. 0aGeologyzAppalachian Region.10aUnited States.bBureau of Mines. 0aGeological Survey professional paper ;v580.  c30374d30374