Subsurface geology and coal resources of the Pennsylvanian system; Sangamon, Macon, Menard, and parts of Christian and Logan Counties, Illinois.
| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
Urbana,
[publisher not identified] ;
1961.
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| Series: | Circular (Illinois State Geological Survey) ;
312. |
| Subjects: |
| Item Description: | Cover title. |
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| Physical Description: | 28 pages : illustrations, (1 folded in pocket) maps (2 folded in pocket) |
| Bibliography: | Bibliography: pages 27-28. |