 |
| |||
| hydrogen sulfide | |||
| серoводород: 7 phrases in 4 subjects |
| Energy industry | 4 |
| General | 1 |
| Natural resourses and wildlife conservation | 1 |
| Technology | 1 |
|
| |||
| hydrogen sulfide | |||
| серoводород: 7 phrases in 4 subjects |
| Energy industry | 4 |
| General | 1 |
| Natural resourses and wildlife conservation | 1 |
| Technology | 1 |