retardateur : 43 phrases in 15 subjects |
Agriculture | 17 |
Chemistry | 1 |
Coal | 1 |
Commerce | 4 |
Electric traction | 1 |
Electronics | 1 |
Environment | 3 |
Hobbies and pastimes | 1 |
Industry | 4 |
Materials science | 1 |
Mechanic engineering | 1 |
Metallurgy | 1 |
Natural sciences | 1 |
Textile industry | 3 |
Transport | 3 |