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| exploration et exploitation; prospection et exploitation | |||
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exploration and exploitation : 7 a las frases, 4 temas |
| Ambiente | 3 |
| General | 1 |
| Naciones unidas | 1 |
| Transporte | 2 |
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| |||
| exploration et exploitation; prospection et exploitation | |||
|
exploration and exploitation : 7 a las frases, 4 temas |
| Ambiente | 3 |
| General | 1 |
| Naciones unidas | 1 |
| Transporte | 2 |