 |
| ventilatie: 82 phrases in 18 subjects |
| Agriculture | 7 |
| Chemistry | 3 |
| Coal | 3 |
| Construction | 3 |
| Earth sciences | 2 |
| Electronics | 5 |
| Environment | 2 |
| General | 5 |
| Health care | 1 |
| Industry | 2 |
| Life sciences | 1 |
| Materials science | 1 |
| Mechanic engineering | 4 |
| Medical | 11 |
| Municipal planning | 13 |
| Patents | 2 |
| Technology | 3 |
| Transport | 14 |