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| exploitation filonienne | |||
| exploitation des chenaux souterrains (образовавшихся в результате заполнения древних речных русел) | |||
| exploitation des filons | |||
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| affaire de filons | |||
| разработка жильных месторождений: 5 phrases in 2 subjects |
| Geology | 1 |
| Mining | 4 |
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