Geography of the upper Illinois valley and history of development /
| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
Urbana :
Illinois state geological survey, University of Illinois,
1916.
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| Series: | Bulletin (Illinois State Geological Survey) ;
no. 27. |
| Subjects: |
| Physical Description: | 208 pages : illustrations |
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