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| cavidad f; concavidad f; hueco m | |||
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approfondissement : 18 phrases in 8 subjects |
| Chemistry | 1 |
| Criminal law | 1 |
| Economy | 2 |
| Electronics | 2 |
| Environment | 2 |
| General | 7 |
| Hydrology | 1 |
| Information technology | 2 |
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