 |
| |||
| signaling method (oleg.vigodsky); signalling method (oleg.vigodsky); signalling technique (oleg.vigodsky) | |||
| способ сигнализации: 4 phrases in 2 subjects |
| Rail transport | 1 |
| Telecommunications | 3 |
|
| |||
| signaling method (oleg.vigodsky); signalling method (oleg.vigodsky); signalling technique (oleg.vigodsky) | |||
| способ сигнализации: 4 phrases in 2 subjects |
| Rail transport | 1 |
| Telecommunications | 3 |