низкий уровень воды: 36 phrases in 13 subjects |
Biology | 1 |
Construction | 2 |
General | 1 |
Geology | 7 |
Geophysics | 2 |
Hydrography | 1 |
Hydrology | 13 |
Mining | 2 |
Natural resourses and wildlife conservation | 2 |
Nautical | 1 |
Road works | 1 |
Technology | 1 |
Water supply | 2 |