 |
| |||
| build section (vbadalov); build up section (vbadalov) | |||
| sloping section (системы отвода газов) | |||
| наклонная секция: 4 phrases in 3 subjects |
| Drilling | 2 |
| Oil and gas | 1 |
| Sakhalin | 1 |
|
| |||
| build section (vbadalov); build up section (vbadalov) | |||
| sloping section (системы отвода газов) | |||
| наклонная секция: 4 phrases in 3 subjects |
| Drilling | 2 |
| Oil and gas | 1 |
| Sakhalin | 1 |