carbonisation : 49 phrases in 12 subjects |
Agriculture | 4 |
Analytical chemistry | 1 |
Chemistry | 13 |
Coal | 12 |
Electronics | 2 |
General | 1 |
Industry | 1 |
Materials science | 1 |
Medical | 1 |
Metallurgy | 6 |
Natural resourses and wildlife conservation | 5 |
Oil / petroleum | 2 |