Spore type 40a
- Citations total:
- 2
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Author - title
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| original | Stephanian | France(Nievre) | Alpern,B. et al. Description of some microspores of the French Permo-Carboniferous. | 1958 | |
| original | Westphalian | Stephanian | France(Nievre) | Liabeuf,J.J. et al. The coal deposit of Decise. Palynological study. | 1970 |