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carbón de piedra | |||
carbón | |||
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antracita y hulla | |||
hulla |
houille : 82 phrases in 14 subjects |
Chemistry | 38 |
Coal | 8 |
Construction | 6 |
Energy industry | 9 |
Environment | 2 |
General | 2 |
Health care | 2 |
Industry | 6 |
Metallurgy | 1 |
Mining | 2 |
Oil / petroleum | 1 |
Politics | 2 |
Textile industry | 1 |
Wood processing | 2 |