00985cam a22002651  4500001001300000003000400013005001700017008004100034010001700075035001900092040004000111042001200151050001600163051002600179100003600205245008800241260009400329300003200423440002200455500006800477500009700545504003100642650002900673999001700702gs 40000142 DLC20260227111345.0780829s1939    paud     b   s000 0 eng c  ags 40000142   a(OCoLC)4175406  aU.S. Geol. Survey. LibrarycPUdDLC  apremarc00aTN24.P4bA7  aTN403.P4bH5cCopy 2.1 aHickok, William Orville,d1905-14aThe minerals of Pennsylvania: Iron ores of Pennsylvania,cby William O. Hickok, IV.  aHarrisburg, Pa.,bDepartment of Internal Affairs, Topographic and Geologic Survey,c1939.  a21 p. incl. tables.c23 cm. 0aBulletin M,v18-B  aAt head of title: Pennsylvania Geological survey, Fourth series  aWith Ashley, G. H. The undeveloped mineral resources of Pennsylvania. 1933. (Bulletin M18-A)  aBibliographical footnotes. 0aIron oreszPennsylvania.  c27625d27625