 |
| загрязнение водоёма: 19 phrases in 16 subjects |
| Agriculture | 1 |
| American usage, not spelling | 1 |
| Biology | 1 |
| Ecology | 1 |
| Economy | 1 |
| Energy industry | 1 |
| Finances | 2 |
| General | 1 |
| Makarov | 1 |
| Medical | 1 |
| Natural resourses and wildlife conservation | 2 |
| Oil and gas | 1 |
| Oilfields | 1 |
| Pulp and paper industry | 1 |
| Sakhalin | 1 |
| Technology | 2 |