öppning : 33 phrases in 14 subjects |
Agriculture | 2 |
Coal | 1 |
Communications | 1 |
Construction | 1 |
Earth sciences | 6 |
Fish farming pisciculture | 2 |
General | 2 |
Industry | 6 |
Law | 1 |
Life sciences | 2 |
Marketing | 4 |
Materials science | 2 |
Technology | 2 |
Transport | 1 |