 |
| |||
| звуковой сигнал | |||
| Signal akustisches: 6 phrases in 5 subjects |
| Computers | 1 |
| Electronics | 2 |
| Medical appliances | 1 |
| Natural resourses and wildlife conservation | 1 |
| Rail transport | 1 |
|
| |||
| звуковой сигнал | |||
| Signal akustisches: 6 phrases in 5 subjects |
| Computers | 1 |
| Electronics | 2 |
| Medical appliances | 1 |
| Natural resourses and wildlife conservation | 1 |
| Rail transport | 1 |