Geologic factors in interpretation of fluorspar reserves in Illinois--Kentucky field.
| Corporate Author: | |
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| Format: | Government Document eBook |
| Language: | English |
| Published: |
[Washington] :
[s.n.],
1937.
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| Subjects: | |
| Online Access: | Electronic resource (PDF) |
| Item Description: | Contains diagrams. |
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| Physical Description: | 1 online resource (13 pages), digital, PDF file |