000019331 000__ 01008cam\a2200265Wi\4500 000019331 001__ 19331 000019331 005__ 20210513004057.0 000019331 008__ 781215s1947\\\\iluf\\\\\\\\\s00010\eng\d 000019331 035__ $$a(OCoLC)ocm04455931 000019331 035__ $$a19331 000019331 040__ $$aKSW$$cKSW$$dm.c.$$dIEP 000019331 043__ $$an-us-il 000019331 049__ $$aIEPC 000019331 090__ $$aQE105$$b.A25 no.124 000019331 092__ $$a557.73$$bIL29r, no. 124 000019331 1001_ $$aWillman, H. B.$$q(Harold Bowen),$$d1901- 000019331 24510 $$aGeological structure of the zinc-lead district of northwestern Illinois /$$cby H. B. Willman and R. R. Reynolds. 000019331 260__ $$aUrbana, Ill. :$$bState Geological Survey,$$c1947. 000019331 300__ $$a15 p. :$$b7 plates (fold. in pocket) ;$$c25 cm. 000019331 4901_ $$aIllinois State Geological Survey Report of investigations ;$$vno. 124 000019331 650_0 $$aLead mines and mining$$zIllinois. 000019331 650_0 $$aZinc mines and mining$$zIllinois. 000019331 650_0 $$aGeology$$zIllinois. 000019331 7001_ $$aReynolds, Robert Ramon,$$ejoint author. 000019331 830_0 $$aReport of investigations (Illinois State Geological Survey) ;$$vno. 124. 000019331 85200 $$bgen$$hQE105$$i.A25$$ino.124 000019331 909CO $$ooai:library.usi.edu:19331$$pGLOBAL_SET 000019331 980__ $$aBIB 000019331 980__ $$aBOOK