vedação : 129 phrases in 18 subjects |
Agriculture | 7 |
Chemistry | 9 |
Coal | 4 |
Communications | 1 |
Construction | 5 |
Earth sciences | 17 |
Electronics | 13 |
Environment | 3 |
General | 3 |
Health care | 1 |
Industry | 19 |
Materials science | 3 |
Mechanic engineering | 26 |
Metallurgy | 3 |
Natural sciences | 2 |
Patents | 1 |
Radiobiology | 1 |
Transport | 11 |