The oil and gas resources of the Ava-Campbell Hill area,
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.
At head of title: State of Illinois. Department of Registration and Education. Division of the State Geological Survey.
gs 28000208
Petroleum--Illinois, Southwestern.
Natural gas--Illinois, Southwestern.
TN872.I3 / R6
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.
At head of title: State of Illinois. Department of Registration and Education. Division of the State Geological Survey.
gs 28000208
Petroleum--Illinois, Southwestern.
Natural gas--Illinois, Southwestern.
TN872.I3 / R6