 |
| pollutional: 19 phrases in 7 subjects |
| Construction | 1 |
| Ecology | 4 |
| Energy industry | 2 |
| Makarov | 2 |
| Natural resourses and wildlife conservation | 1 |
| Technology | 2 |
| Water supply | 7 |
|
| pollutional: 19 phrases in 7 subjects |
| Construction | 1 |
| Ecology | 4 |
| Energy industry | 2 |
| Makarov | 2 |
| Natural resourses and wildlife conservation | 1 |
| Technology | 2 |
| Water supply | 7 |