 |
| |||
| telephone signaling | |||
| передача сигналов вызова: 21 phrases in 6 subjects |
| Electronics | 2 |
| Makarov | 3 |
| Mass media | 10 |
| Military | 1 |
| Technology | 1 |
| Telecommunications | 4 |
|
| |||
| telephone signaling | |||
| передача сигналов вызова: 21 phrases in 6 subjects |
| Electronics | 2 |
| Makarov | 3 |
| Mass media | 10 |
| Military | 1 |
| Technology | 1 |
| Telecommunications | 4 |