 |
| |||
| горизонтальная скважина | |||
| puits horizontal: 5 phrases in 4 subjects |
| Hydraulic engineering | 1 |
| Mining | 1 |
| Natural resourses and wildlife conservation | 1 |
| Oil and gas technology | 2 |
|
| |||
| горизонтальная скважина | |||
| puits horizontal: 5 phrases in 4 subjects |
| Hydraulic engineering | 1 |
| Mining | 1 |
| Natural resourses and wildlife conservation | 1 |
| Oil and gas technology | 2 |