 |
| |||
| колонна крепи | |||
| lining string: 10 phrases in 7 subjects |
| Construction | 1 |
| Geology | 1 |
| Mining | 2 |
| Oil / petroleum | 3 |
| Oil and gas technology | 1 |
| Rail transport | 1 |
| Road works | 1 |
|
| |||
| колонна крепи | |||
| lining string: 10 phrases in 7 subjects |
| Construction | 1 |
| Geology | 1 |
| Mining | 2 |
| Oil / petroleum | 3 |
| Oil and gas technology | 1 |
| Rail transport | 1 |
| Road works | 1 |