 |
| |||
| chemical analysis (Yeldar Azanbayev) | |||
| химический анализ состава: 5 phrases in 5 subjects |
| Ecology | 1 |
| General | 1 |
| Nautical | 1 |
| Oil and gas technology | 1 |
| Quality control and standards | 1 |
|
| |||
| chemical analysis (Yeldar Azanbayev) | |||
| химический анализ состава: 5 phrases in 5 subjects |
| Ecology | 1 |
| General | 1 |
| Nautical | 1 |
| Oil and gas technology | 1 |
| Quality control and standards | 1 |