Contributions to the study of coal ; mineral matter of no. 6 bed coal at West Frankfort, Franklin County, Illinois /
| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
Urbana, Illinois,
[publisher not identified] ;
1935.
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| Series: | Report of investigations (Illinois State Geological Survey) ;
no. 33. |
| Subjects: |
| Item Description: | At head of title: State of Illinois. Department of Registration and Education. Division of the State Geological Survey. |
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| Physical Description: | 106 pages : illustrations |