 |
| |||
| система очистки газа (aivanov) | |||
| scrubbing system: 4 phrases in 4 subjects |
| Chemistry | 1 |
| Energy industry | 1 |
| Natural resourses and wildlife conservation | 1 |
| Oil and gas | 1 |
|
| |||
| система очистки газа (aivanov) | |||
| scrubbing system: 4 phrases in 4 subjects |
| Chemistry | 1 |
| Energy industry | 1 |
| Natural resourses and wildlife conservation | 1 |
| Oil and gas | 1 |