 |
| |||
| sewage treatment facilities (Alexander Demidov) | |||
| очистные сооружения канализации: 5 phrases in 4 subjects |
| Ecology | 2 |
| European Bank for Reconstruction and Development | 1 |
| Sakhalin | 1 |
| Water supply | 1 |
|
| |||
| sewage treatment facilities (Alexander Demidov) | |||
| очистные сооружения канализации: 5 phrases in 4 subjects |
| Ecology | 2 |
| European Bank for Reconstruction and Development | 1 |
| Sakhalin | 1 |
| Water supply | 1 |