01210cam a22003011a 4500001001300000003000400013005001700017008004100034010001700075035001900092040004800111042001200159043001200171050002300183110001800206245006100224260005100285300002800336440007600364500015800440500006400598500002800662650003700690710003800727710008900765710003700854999001700891gs 14000479 DLC20260227111315.0810422s1914    ilua         s000 0 eng c  ags 14000479   a(OCoLC)7356277  aLibrary, U. S. GeologicalcIdIdOCoLCdDLC  apremarc  an-us-il00aTN805.I3bA4 no. 41 aAndros, S. O.10aCoal mining practice in district VII /cby S. O. Andros.  aUrbana, Ill. :bUniversity of Illinois,c1914.  a53 p. :bill. ;c25 cm. 0aIllinois coal mining investigations cooperative agreement bulletin ;v4  aPrepared under a cooperative agreement between State Geological Survey, Dept. of Mining Engineering of the University of Illinois, U. S. Bureau of Mines.  aField work by S. O. Andros, C. M. Young and J. J. Rutledge.  aOn cover: vol. 1 no. 1. 0aCoal mines and miningzIllinois.2 aIllinois State Geological Survey.2 aUniversity of Illinois (Urbana-Champaign campus).bDepartment of Mining Engineering.1 aUnited States.bBureau of Mines.  c25370d25370