01234cam a22002531 4500 gs 15000804 DLC 20260227111318.0 750818s1915 iluab s000 0 eng c gs 15000804 (OCoLC)1555572 U.S. Geol. Survey. Libr. I OCoLC DLC premarc QE105 .A16 no. 31 Illinois State Geological Survey Oil investigations in Illinois in 1914. Area south of the Colmar oil field, by William C. Morse and Fred H. Kay. The Coolmar oil field--a restudy, by William C. Morse and Fred H. Kay. The Allendale oil field, by John L. Rich. Anticlinal structure in Randolph County, by Stuart Weller. Oil and gas in Gillespie and Mt. Olive quadrangles, by Wallace Lee. Work in cooperation with U.S. Geological survey. Urbana, Illinois State Geological Survey, University of Illinois, 1915. 111 p. illus., fold. maps, fold. tab., diagrs. (part fold.) 26 cm. Its Bulletin no. 31 Bound with Bulletin no. 29. Petroleum Illinois. Morse, William Clifford, 1874- Bulletin (Illinois State Geological Survey) ; no. 31. 25588 25588