Physiographic divisions of the area covered by the Illinoian drift-sheet in southern Illinois : recent discoveries of Pre-Illinoian drift in southern Illinois /
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| Format: | Book |
| Language: | English |
| Published: |
Urbana :
[Illinois State Geological Survey],
1929.
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| Series: | Report of investigations (Illinois State Geological Survey)
no. 19. |
| Subjects: |