 |
|
Luftung : 57 phrases in 13 subjects |
| Chemistry | 1 |
| Construction | 21 |
| Electric traction | 1 |
| Electronics | 1 |
| General | 2 |
| Labor law | 16 |
| Mechanic engineering | 2 |
| Municipal planning | 4 |
| Natural resourses and wildlife conservation | 2 |
| Nuclear physics | 1 |
| Patents | 2 |
| Technology | 2 |
| Transport | 2 |