 |
| |||
| каверна-хранилище | |||
| cavern storage: 21 phrases in 6 subjects |
| Natural resourses and wildlife conservation | 1 |
| Oil / petroleum | 5 |
| Oil and gas | 5 |
| Oil and gas technology | 3 |
| Oilfields | 4 |
| Technology | 3 |
|
| |||
| каверна-хранилище | |||
| cavern storage: 21 phrases in 6 subjects |
| Natural resourses and wildlife conservation | 1 |
| Oil / petroleum | 5 |
| Oil and gas | 5 |
| Oil and gas technology | 3 |
| Oilfields | 4 |
| Technology | 3 |