 |
| |||
| gas engineering; gas-engineering | |||
| газотехнический: 5 phrases in 5 subjects |
| Drilling | 1 |
| General | 1 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Production | 1 |
|
| |||
| gas engineering; gas-engineering | |||
| газотехнический: 5 phrases in 5 subjects |
| Drilling | 1 |
| General | 1 |
| Oil and gas | 1 |
| Oil and gas technology | 1 |
| Production | 1 |