| |||
| радиообмен | |||
|
radio conversation : 5 phrases in 2 subjects |
| Information security and data protection | 2 |
| Security systems | 3 |
| |||
| радиообмен | |||
|
radio conversation : 5 phrases in 2 subjects |
| Information security and data protection | 2 |
| Security systems | 3 |