01358cam a22003131  4500001001300000003000400013005001700017008004100034010001700075035001900092040005700111042001200168050002300180100003800203245008900241260006700330300007200397490005600469500012400525500006500649500003400714504003200748650003500780650003600815650005500851650005600906740002300962830005900985gs 27000129 DLC20260227111331.0780204s1926    xx            000 0 eng c  ags 27000129   a(OCoLC)3603441  aLibrary, U.S. Geological SurveycOTdTxUdOCoLCdDLC  apremarc00aQE105b.A16 no. 491 aKnappen, Russell Stafford,d1892-00aGeology and mineral resources of the Dixon quadrangle,cby Russell Stafford Knappen.  aUrbana, Ill.b[Schnepp & Barnes, printers, Springfield]c1926.  a141 p. incl. illus., tables.bV pl. (fold. maps, part col.)c26 cm.1 aIllinois. State geological survey. Bulletinvno. 49  aAt head of title: State of Illinois. Department of registration and education. Division of the State geological survey.  aPublished also as thesis (Ph. D.) Columbia university, 1927.  aPlates I-II folded in pocket.  aBibliographical references. 0aGeologyzIllinoiszLee County. 0aGeologyzIllinoiszOgle County. 0aMines and mineral resourceszIllinoiszLee County. 0aMines and mineral resourceszIllinoiszOgle County.0 aDixon quadgrangle. 0aBulletin (Illinois State Geological Survey) ;vno. 49.