 |
| |||
| Umluft f | |||
| |||
| Umluft f | |||
| recirculating air: 10 phrases in 8 subjects |
| Agriculture | 1 |
| Chemistry | 1 |
| Construction | 2 |
| General | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 1 |
| Technology | 1 |
| Transport | 2 |
|
| |||
| Umluft f | |||
| |||
| Umluft f | |||
| recirculating air: 10 phrases in 8 subjects |
| Agriculture | 1 |
| Chemistry | 1 |
| Construction | 2 |
| General | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 1 |
| Technology | 1 |
| Transport | 2 |