Physiographic divisions of Illinois
By: by M.M. Leighton, George E. Ekblaw, and Leland Horberg
Contributors: Ekblaw, George E. (George Elbert), 1895-1972; Horberg, Leland
Series: Illinois State Geological Survey. Report of investigations -- no. 129; Report of investigations (Illinois State Geological Survey) -- no. 129.
Publisher: Illinois State Geological Survey
Published: 1948
Place of publication: Urbana, Ill
Language: eng
Number of pages: 33
Subjects: Physical geography
Notes: "Reprinted from the Journal of Geology, vol. 56, no. 1, January, 1948."

Includes bibliographical references.