01074cam a22002771  4500001001300000003000400013005001700017008004100034010001700075035001900092040002600111042001200137050001500149100005300164245013700217260008400354300001800438410007100456500012400527500002900651504003100680650002300711650002800734650001700762999001700779gs 28000083 DLC20260227111332.0790607s1927    ilua     b   s000 0 eng    ags 28000083   a(OCoLC)5045249  aDLCcTxCMdOCoLCdDLC  apremarc00aQE105b.T51 aThwaites, F. T.q(Fredrik Turville),d1883-1961.10aStratigraphy and geologic structure of Northern Illinois,bwith special reference to underground water supplies,cby R. T. Thwaites.  aUrbana, Illinoisa[Springfield,bJeffersons Printing and Stationery Co.]c1927.  a49 p.billus.20aIllinois State Geological SurveytReport of investigationsvno. 13  aAt head of title: State of Illinois. Department of Registration and Education. Division of the State Geological Survey.  aPlates folded in pocket.  aBibliographical footnotes. 0aGeologyzIllinois. 0aWater-supplyzIllinois. 0aGroundwater.  c26621d26621