 |
| polluted waters: 13 phrases in 8 subjects |
| Ecology | 3 |
| General | 1 |
| Makarov | 3 |
| Metallurgy | 1 |
| Military | 1 |
| Nuclear and fusion power | 2 |
| Technology | 1 |
| Water supply | 1 |
|
| polluted waters: 13 phrases in 8 subjects |
| Ecology | 3 |
| General | 1 |
| Makarov | 3 |
| Metallurgy | 1 |
| Military | 1 |
| Nuclear and fusion power | 2 |
| Technology | 1 |
| Water supply | 1 |