01970oam 2200565 450 991070804580332120170515134121.0(CKB)5470000002470121(OCoLC)568523984(OCoLC)659374046(OCoLC)891401218(OCoLC)995470000002470121(EXLCZ)99547000000247012120100324d1908 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierEconomic geology of the Georgetown quadrangle (together with the Empire district) Colorado /by Josiah E. Spurr and George H. Garrey: with General geology, by Sydney H. BallWashington :Department of the Interior, United States Geological Survey,1908.1 online resource (422 pages) illustrations, maps +4 platesProfessional paper ;63Includes bibliographical references and index.Economic geology of the Georgetown quadrangle Mines and mineral resourcesColoradoGeology, EconomicColoradoGeologyfastMines and mineral resourcesfastColoradofastMines and mineral resourcesGeology, EconomicGeology.Mines and mineral resources.Spurr Josiah Edward1870-1950,837668Garrey G. H(George H.),1886-Ball Sydney H(Sydney Hobart),Geological Survey (U.S.),OCLCEOCLCEOCLCQOCLCAOCLCQOCLCOOCLCFCOPOCLCQGPOBOOK9910708045803321Economic geology of the Georgetown quadrangle (together with the Empire district) Colorado3540148UNINA