 |
| биологический пруд: 11 phrases in 5 subjects |
| Environment | 3 |
| Hygiene | 1 |
| Natural resourses and wildlife conservation | 1 |
| Public utilities | 1 |
| Water supply | 5 |
|
| биологический пруд: 11 phrases in 5 subjects |
| Environment | 3 |
| Hygiene | 1 |
| Natural resourses and wildlife conservation | 1 |
| Public utilities | 1 |
| Water supply | 5 |