 |
| |||
| groupe du puits | |||
|
система скважин : 10 phrases in 3 subjects |
| Hydraulic engineering | 3 |
| Mining | 1 |
| Oil and gas technology | 6 |
|
| |||
| groupe du puits | |||
|
система скважин : 10 phrases in 3 subjects |
| Hydraulic engineering | 3 |
| Mining | 1 |
| Oil and gas technology | 6 |