 |
| |||
| ground-to-train communication | |||
| |||
| point to-train communication | |||
| радиосвязь с поездами: 3 do fraz, 2 tematyki |
| Technika i technologia | 2 |
| Wojskowość | 1 |
|
| |||
| ground-to-train communication | |||
| |||
| point to-train communication | |||
| радиосвязь с поездами: 3 do fraz, 2 tematyki |
| Technika i technologia | 2 |
| Wojskowość | 1 |