 |
| |||
| Telecommunications and information exchange between systems (Shmelev Alex) | |||
| Телекоммуникация и информационный обмен между системами: 2 phrases in 1 subject |
| Power system protection | 2 |
|
| |||
| Telecommunications and information exchange between systems (Shmelev Alex) | |||
| Телекоммуникация и информационный обмен между системами: 2 phrases in 1 subject |
| Power system protection | 2 |