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| Micro | |
| génér. | micro |
| Fossil | |
| envir. | fossil |
| métall. | petrification |
| Fossil- | |
| génér. | fossiliferous |
| médic. | fossil |
| Fossil... | |
| génér. | fossiliferous |
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| 10 ^ -6 | |||
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| micro | |||
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micro : 12 phrases, 6 sujets |
| Automobiles | 1 |
| Éducation | 1 |
| Général | 3 |
| Médical | 3 |
| Moteurs | 1 |
| Ornithologie | 3 |