Preliminary report of the economic mineral resources of Calhoun County /
by J. E. Lamar. Printed by authority of the state of Illinois.
- Urbana, Ill., 1926
- 21 p. illus., tables, diagrs. 25 cm.
At head of title: State of Illinois. Department of Registration and Education. Division of State Geological Survey.
Bibliographical foot-notes.
gs 26000137
Mines and mineral resources--Illinois--Calhoun County. Geology, Economic--Illinois--Calhoun County.