Mineral production in Illinois in 1970
By: W.L. Busch
Contributors: Illinois State Geological Survey
Series: Circular (Illinois State Geological Survey) -- 469
Publisher: Illinois State Geological Survey
Published: 1972
Place of publication: Urbana
Language: eng
Number of pages: 22
Subjects: Mines and mineral resources
Notes: At head of title: State of Illinois, Department of Registration and Education.