| |||
| процесс очистки | |||
|
purification process : 9 phrases in 3 subjects |
| Energy industry | 6 |
| Makarov | 1 |
| Natural resourses and wildlife conservation | 2 |
| |||
| процесс очистки | |||
|
purification process : 9 phrases in 3 subjects |
| Energy industry | 6 |
| Makarov | 1 |
| Natural resourses and wildlife conservation | 2 |