01065cam a22002651  4500001001300000003000400013005001700017008004100034010001700075035001900092040004200111042001200153050001600165100003700181245013600218260009300354300004800447490006500495500007000560500002300630650002700653650003800680830006400718999001700782gs 07000713 DLC20260227111306.0810923s1878    paub          000 0 eng c  ags 07000713   a(OCoLC)7785810  aU.S. Geol. Survey. LibrarycNBuUdDLC  apremarc00aQE653b.H941 aHunt, Thomas Sterry,d1826-1892.00aSpecial report on the trap dykes and Azoic rocks of southeastern Pennsylvania.cBy T. Sterry Hunt. Part I. Historical introduction.  aHarrisburg,bPub. by the Board of commissioners for the Second geological survey,c1878.  aExxi, E253, 2, [1] p.bfront. (map)c23 cm.1 aPennsylvania. Geological survey, 2d. [Report of progressvE]  aAt head of title: Second geological survey of Pennsylvania: 1875.  aNo more published. 0aGeologyzPennsylvania. 0aGeology, StratigraphicyArchaean. 0aReport of progress (Geological Survey of Pennsylvania),vE.  c24620d24620