Cave in Rock area
Subtitle: Hardin County
By: by Gilbert O. Raasch
Contributors: Illinois State Geological Survey
Series: Guide leaflet -- 48-A; Guide leaflet (Illinois State Geological Survey) -- 48-A.
Publisher: State of Illinois, Dept. of Registration and Education, State Geological Survey Division
Published: 1948
Place of publication: Urbana, Ill
Language: eng
Subjects: Geology
Other titles: Hardin County
Notes: Cover title.

"April 17, 1948."