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fire barrier : 18 phrases in 12 subjects |
| Architecture | 1 |
| Armored vehicles | 1 |
| Construction | 3 |
| Ecology | 1 |
| Energy industry | 2 |
| Firefighting and fire-control systems | 1 |
| Forestry | 1 |
| Makarov | 1 |
| Military | 2 |
| Occupational health & safety | 2 |
| Technology | 2 |
| Transport | 1 |