 |
| |||
| дальний радиомаркёр | |||
|
outer radio marker : 4 phrases in 3 subjects |
| Airports and air traffic control | 1 |
| Soviet | 1 |
| Technology | 2 |
|
| |||
| дальний радиомаркёр | |||
|
outer radio marker : 4 phrases in 3 subjects |
| Airports and air traffic control | 1 |
| Soviet | 1 |
| Technology | 2 |