00987cam a22002531 4500 gs 15000159 DLC 20260227111317.0 760330s1914 ilubd 000 0 eng gs 15000159 (OCoLC)2080500 DLC OT OCoLC DLC premarc QE105 .A16 no. 28 TN872.I3 B5 Copy 2. Blatchley, Raymond S. Oil and gas in Bond, Macoupin, and Montgomery counties, Illinois, by Raymond S. Blatchley; work done in cooperation with Illinois coal mining investigations, and U. S. Geological survey. Urbana, Illinois State Geological Survey, University of Illinois, 1914. 51 p. fold. map, diagrs. (part fold.) 26 cm. Illinois. State geological survey. Bulletin no. 28 Petroleum Illinois. Natural gas Illinois. Illinois coal mining investigations (Cooperative agreement) 25480 25480