Wisconsinan and Sangamonian type sections of central Illinois /
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| Main Author: | |
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| Corporate Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
Champaign, Ill. (615 E. Peabody Dr., Champaign 61820) :
Illinois State Geological Survey,
[1990]
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| Series: | ISGS guidebook ;
21 |
| Subjects: | |
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