01062cam a22002771  4500001001300000003000400013005001700017008004100034010001700075035001900092040002600111042001200137050002300149082001000172100003800182245017900220260004300399300008500442410005400527500005300581650004300634650002300677700003000700700003700730999001700767gs 09000056 DLC20260227111308.0780524s1908    dcuabef      f001 0 eng    ags 09000056   a(OCoLC)3925174  aDLCcUSlWdOCoLCdDLC  apremarc00aTN24.C6bS8 no. 63  a557.31 aSpurr, Josiah Edward,d1870-1950.10aEconomic geology of the Georgetown quadrangle (together with the Empire district) Colorado,cby Josiah E. Spurr and George H. Garrey: with general geology, by Sydney H. Ball.  aWashington,bGovt. Print. Off.,c1908.  a422 p.billus., LXXXVII pl. (part fold., incl. maps, plans) diagrs.c29 x 23 cm.20aGeological Survey (U.S.).tProfessional paperv63  aFour folded plates, including 2 maps, in pocket. 0aMines and mineral resourceszColorado. 0aGeologyzColorado.1 aGarrey, George H.,d1886-1 aBall, Sydney Hobart,d1877-1949.  c24810d24810