 |
| |||
| средняя часть угольного пласта | |||
| wall coal: 8 phrases in 6 subjects |
| Energy industry | 1 |
| General | 1 |
| Geophysics | 1 |
| Makarov | 3 |
| Mining | 1 |
| Technology | 1 |
|
| |||
| средняя часть угольного пласта | |||
| wall coal: 8 phrases in 6 subjects |
| Energy industry | 1 |
| General | 1 |
| Geophysics | 1 |
| Makarov | 3 |
| Mining | 1 |
| Technology | 1 |