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gisement de houille; gîte de charbon; gîte de houille | |||
gisement de charbon (I. Havkin); champ houiller | |||
gisement houiller |
угольное месторождение : 5 phrases in 4 subjects |
General | 1 |
Geology | 2 |
Natural resourses and wildlife conservation | 1 |
Technology | 1 |