обрушение: 295 phrases in 16 subjects |
Construction | 11 |
Firefighting and fire-control systems | 1 |
General | 6 |
Geology | 62 |
Geophysics | 7 |
Hydrography | 1 |
Hydrology | 19 |
Mining | 103 |
Natural resourses and wildlife conservation | 13 |
Nautical | 5 |
Oil / petroleum | 6 |
Rail transport | 3 |
Road works | 5 |
Shipbuilding | 1 |
Technology | 24 |
Water supply | 28 |