000010897 000__ 00979cam\a2200253Wi\4500 000010897 001__ 10897 000010897 005__ 20210512012113.0 000010897 008__ 780327s1961\\\\iluab\\\\b\\\s00010\eng\d 000010897 010__ $$a61-009448 000010897 035__ $$a(OCoLC)ocm03752644 000010897 035__ $$a10897 000010897 049__ $$aISEA 000010897 090__ $$aQE105$$b.A45 no.312 000010897 1001_ $$aClegg, Kenneth Edward. 000010897 24510 $$aSubsurface geology and coal resources of the Pennsylvanian system in Sangamon, Macon, Menard, and parts of Christian and Logan Counties, Illinois /$$c[by] Kenneth E. Clegg. 000010897 260__ $$aUrbana :$$bIllinois State Geological Survey,$$c1961. 000010897 300__ $$a28 p. :$$bill., maps ;$$c25 cm. 000010897 4901_ $$aIllinois. State Geological Survey. Circular 312 000010897 500__ $$aPart of illustrative matter in pocket. 000010897 504__ $$aBibliography: p. 27-28. 000010897 650_0 $$aGeology, Stratigraphic$$yPennsylvanian. 000010897 650_0 $$aCoal$$xGeology$$zIllinois. 000010897 7102_ $$aIllinois State Geological Survey. 000010897 830_0 $$aCircular (Illinois State Geological Survey) ;$$v312 000010897 85200 $$bgen$$hQE105$$i.A45$$ino.312 000010897 909CO $$ooai:library.usi.edu:10897$$pGLOBAL_SET 000010897 980__ $$aBIB 000010897 980__ $$aBOOK