 |
| forurening: 249 phrases in 19 subjects |
| Agriculture | 4 |
| Chemistry | 3 |
| Earth sciences | 1 |
| Economy | 15 |
| Environment | 145 |
| Fish farming pisciculture | 2 |
| Food industry | 3 |
| General | 19 |
| Health care | 14 |
| Industry | 1 |
| Information technology | 3 |
| Law | 11 |
| Medical | 2 |
| Metallurgy | 3 |
| Mineral products | 1 |
| Natural sciences | 1 |
| Politics | 1 |
| Technology | 2 |
| Transport | 18 |