| |||
| колчеданная печь | |||
| |||
| колчеданная печь | |||
|
pyrites burner : 13 phrases in 3 subjects |
| Chemistry | 3 |
| Oil / petroleum | 5 |
| Oil and gas | 5 |
| |||
| колчеданная печь | |||
| |||
| колчеданная печь | |||
|
pyrites burner : 13 phrases in 3 subjects |
| Chemistry | 3 |
| Oil / petroleum | 5 |
| Oil and gas | 5 |