Geography of the upper Illinois valley and history of development
By: by Carl Ortwin Sauer.
Series: Illinois. State Geological Survey. Bulletin -- no. 27; Bulletin (Illinois State Geological Survey) -- no. 27
Publisher: Illinois State Geological Survey, University of Illinois
Published: 1916
Place of publication: Urbana
Language: eng
Number of pages: 206
Subjects: Geology -- Illinois