00999cam a2200277   4500001001300000003000400013005001700017008004100034010002300075040003500098050002200133051002600155082001700181100004300198245010300241260005200344300003700396350000900433490004500442504003000487650004200517650003000559700006600589830004900655999001700704gs 68000342 DLC20260227111423.0690603s1968    dcuab    b    00110 eng c  ags 68000342 //r882  aU.S. Geological Survey Library0 aQE75b.P9 no. 610  aTN423.A5bK6cCopy 2.  a553/.41/097310aKoschmann, Albert Herbert,d1896-1962.10aPrincipal gold-producing districts of the United States,cby A. H. Koschmann and M. H. Bergendahl.0 aWashington,bU.S. Dept. of the Interior,c1968.  av, 283 p.billus., maps.c30 cm.  a4.751 aGeological Survey professional paper 610  aBibliography: p. 263-276. 0aGold mines and miningzUnited States. 0aGold oreszUnited States.10aBergendahl, M. H.q(Maximilian Hilmar),d1921-ejoint author. 0aGeological Survey professional paper ;v610.  c30541d30541