 |
| |||
| вентиляционный горизонт | |||
| ventilation level: 4 phrases in 4 subjects |
| Automobiles | 1 |
| Firefighting and fire-control systems | 1 |
| GOST | 1 |
| Medical appliances | 1 |
|
| |||
| вентиляционный горизонт | |||
| ventilation level: 4 phrases in 4 subjects |
| Automobiles | 1 |
| Firefighting and fire-control systems | 1 |
| GOST | 1 |
| Medical appliances | 1 |