 |
| использование сточных вод: 58 phrases in 15 subjects |
| Agriculture | 2 |
| Construction | 6 |
| Ecology | 14 |
| Economy | 1 |
| Energy industry | 3 |
| Hydraulic engineering | 1 |
| Makarov | 10 |
| Natural resourses and wildlife conservation | 7 |
| Public utilities | 1 |
| Pulp and paper industry | 1 |
| Technology | 2 |
| United Nations | 1 |
| Water resources | 1 |
| Water supply | 7 |
| Weapons of mass destruction | 1 |