00879cam a22002171  4500001001300000003000400013005001700017008004100034010001700075035001900092040003900111042001200150050001600162100003600178245019500214260001900409300002700428490007200455500011500527650001900642gs 25000088 DLC20260227111329.0810807s1925    ilu          s000 0 eng c  ags 25000088   a(OCoLC)7650806  aU.S. Geol. Survey Libr.cGStGdDLC  apremarc00aTN939b.L531 aLittlefield, Max Sylvan,d1900-10aPreliminary report of an investigation of the molding sand resources of Illinois,cby M. S. Littlefield. In cooperation with the Engineering experiment station of the University of Illinois.  aUrbana,c1925.  a37 p.btables.c26 cm.0 aIllinois. State geological survey. Report of investigations,vno. 3  aAt head of title: State of Illinois. Dept. of registration and education. Division of State geological survey. 0aSand, Molding.