01027cam a22002771i 4500001001300000003000400013005001700017008004100034010001700075035001900092040002800111042001200139050001700151086001600168100003400184245011400218260004900332300004300381490007800424500006500502504002600567650004900593650003700642830005300679999001700732gs 35000083 DLC20260227111339.0790319s1935    dcudf        f001 0 eng    ags 35000083   a(OCoLC)4753414  aDLCcCoU-DAdOCoLCdDLC  apremarc00aTN443.A5bR60 aI 19.16:1791 aRoss, Clarence Samuel,d1880-10aOrigin of the copper deposits of the Ducktown type in the southern Appalachian region /cby Clarence S. Ross.  aWashington :bU.S. Gov't. Print. Off.,c1935  av, 165 p. :bill., 44 plates ;c29 cm.1 aGeological Survey (U.S.). Geological Survey professional paper ;vno. 179  aAt head of title:  United States Department of the Interior.  aBibliography: p. 3-7. 0aCopper mines and miningzAppalachian Region. 0aCopper oreszAppalachian Region. 0aGeological Survey professional paper ;vno. 179.  c27173d27173