00969cam a22002531 4500 gs 28000208 DLC 20260227111332.0 790607s1928 ilua s000 0 eng gs 28000208 (OCoLC)5045398 DLC TxCM DLC premarc TN872.I3 R6 Root, Towner Bowditch, 1899- The oil and gas resources of the Ava-Campbell Hill area, by Towner B. Root. Urbana, Ill., Printed by authority of the state of Illinois, 1928. 27 p. illus. Illinois State Geological Survey Report of Investigations no. 16 At head of title: State of Illinois. Department of Registration and Education. Division of the State Geological Survey. Petroleum Illinois, Southwestern. Natural gas Illinois, Southwestern. Ava-Campbell Hill area, Oil and gas resources of the. 26645 26645