primary waters: 46 phrases in 12 subjects |
Caspian | 1 |
Ecology | 10 |
Electronics | 7 |
Energy industry | 9 |
Environment | 1 |
General | 2 |
Natural resourses and wildlife conservation | 3 |
Nautical | 2 |
Nuclear and fusion power | 3 |
Shipbuilding | 2 |
Technology | 3 |
Water supply | 3 |