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sulphur content | |||
sulfur content |
teneur en soufre: 32 phrases in 12 subjects |
Chemistry | 3 |
Coal | 2 |
Energy industry | 3 |
Environment | 6 |
General | 3 |
Metallurgy | 2 |
Natural resourses and wildlife conservation | 3 |
Oil / petroleum | 1 |
Politics | 1 |
Statistics | 5 |
Technology | 2 |
United Nations | 1 |