 |
| |||
| случайное загрязнение | |||
| incident pollution: 7 phrases in 4 subjects |
| Ecology | 3 |
| Fish farming pisciculture | 1 |
| Natural resourses and wildlife conservation | 2 |
| Water supply | 1 |
|
| |||
| случайное загрязнение | |||
| incident pollution: 7 phrases in 4 subjects |
| Ecology | 3 |
| Fish farming pisciculture | 1 |
| Natural resourses and wildlife conservation | 2 |
| Water supply | 1 |