01802oam 2200505 450 991070565330332120170519134559.0(CKB)5470000002451864(OCoLC)891574811(OCoLC)995470000002451864(EXLCZ)99547000000245186420140929d1968 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierPrincipal gold-producing districts of the United States /by A. H. Koschmann and M. H. BergendahlWashington :U.S. Department of the Interior, Geological Survey,1968.1 online resource (v, 283 pages) illustrations, mapsGeological Survey professional paper ;610Title from title screen (viewed September 24, 2014)."A description of the geology, mining history, and production of the major gold-mining districts in 21 states."Includes bibliographical references and index.Gold mines and miningUnited StatesGold oresUnited StatesGold mines and miningfastGold oresfastUnited StatesfastGold mines and miningGold oresGold mines and mining.Gold ores.Koschmann A. H(Albert Herbert),1896-1962,1386525Bergendahl M. H(Maximilian Hilmar),1921-Geological Survey (U.S.),COPCOPOCLCOOCLCFGPOBOOK9910705653303321Principal gold-producing districts of the United States3530481UNINA