00836cam a22002411  4500001001300000003000400013005001700017008004100034010001700075035001900092040004800111042001200159043001200171050002200183100004800205245007300253260004000326300004600366490006500412650004700477700005300524999001700577gs 15000098 DLC20260227111317.0790417s1913    paubf        s001 0 eng c  ags 15000098   a(OCoLC)4865669  aU.S. Geol. Survey. LibrarycNcRSdNcRSdDLC  apremarc  an-us-pa00aGA61.P4bA5 no. 91 aBrown, Amos P.q(Amos Peaslee),d1864-1917.10aMinerals of Pennsylvania,cby Amos P. Brown and Frederick Ehrenfeld.  aHarrisburg, Pa.,bW. S. Ray,c1913.  a160 p.bplates, maps (part fold.)c24 cm.0 aPennsylvania. Topographic and Geologic Survey. Reportvno. 9 0aMines and mineral resourceszPennsylvania.1 aEhrenfeld, Frederick,d1872-1940,ejoint author.  c25470d25470