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| система оповещения и эвакуации людей при пожаре (Elina Semykina) | |||
| fire warning and evacuation system: 3 phrases in 1 subject |
| Firefighting and fire-control systems | 3 |
|
| |||
| система оповещения и эвакуации людей при пожаре (Elina Semykina) | |||
| fire warning and evacuation system: 3 phrases in 1 subject |
| Firefighting and fire-control systems | 3 |