Waukegan area
Subtitle: Lake County
By: by Gilbert O. Raasch
Contributors: Illinois State Geological Survey
Series: Guide leaflet -- 1950-D; Guide leaflet (Illinois State Geological Survey) -- 1950D.
Publisher: State of Illinois, Dept. of Registration and Education, State Geological Survey Division
Published: 1950
Place of publication: Urbana, Ill
Language: eng
Subjects: Geology
Other titles: Lake County.
Notes: Cover title.

"October 7, 1950."

Bibliography: leaf 8.