Circular - Illinois State Geological Survey.
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| Prejšnji naslov: | Illinois State Geological Survey. Information circular. |
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| Corporate Authors: | , |
| Format: | Serijska publikacija |
| Jezik: | English |
| Izdano: |
Urbana,
Illinois State Geological Survey.
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| Teme: |
| Izdano: | 1- 1906- |
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| Opis knjige/članka: | At head of title: State of Illinois, Department of Registration and Education. |
| Fizični opis: | no. ill., plates, maps, diagrs. 24-28 cm. |
| ISSN: | 0073-506X |