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derrick : 71 phrases in 12 subjects |
Agriculture | 4 |
Coal | 2 |
Construction | 5 |
General | 2 |
Industry | 1 |
Materials science | 2 |
Mechanic engineering | 8 |
Metallurgy | 15 |
Natural resourses and wildlife conservation | 2 |
Natural sciences | 1 |
Oil / petroleum | 1 |
Transport | 28 |