The fluorspar deposits of Hardin and Pope Counties /
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
Urbana :
State Geological Survey,
1931.
|
| Series: | Bulletin (Illinois State Geological Survey) ;
no. 58. |
| Subjects: |
| Item Description: | Two maps and diagram folded in pocket. |
|---|---|
| Physical Description: | 116 pages : illustrations |
| Bibliography: | Bibliographical foot-notes. |