The glacial boundary in southern Illinois /

Bibliographic Details
Main Author: Willman, H. B. (Harold Bowen), 1901-1955
Other Authors: Frye, John C., (John Chapman), 1912-1982
Format: Book
Language:English
Published: Urbana, Ill. : Illinois Institute of Natural Resources, Illinois State Geological Survey Division, 1980.
Series:Circular (Illinois State Geological Survey) ; 511.
Subjects:

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