 |
| |||
| sewage water motion (Yeldar Azanbayev) | |||
| движения сточных вод: 5 phrases in 3 subjects |
| Construction | 1 |
| Ecology | 1 |
| Natural resourses and wildlife conservation | 3 |
|
| |||
| sewage water motion (Yeldar Azanbayev) | |||
| движения сточных вод: 5 phrases in 3 subjects |
| Construction | 1 |
| Ecology | 1 |
| Natural resourses and wildlife conservation | 3 |