 |
| |||
| exploitation minière souterraine (ROGER YOUNG); extraction souterraine (ROGER YOUNG) | |||
| подземные горные работы: 13 phrases in 4 subjects |
| General | 6 |
| Geology | 1 |
| Mining | 5 |
| Technology | 1 |
|
| |||
| exploitation minière souterraine (ROGER YOUNG); extraction souterraine (ROGER YOUNG) | |||
| подземные горные работы: 13 phrases in 4 subjects |
| General | 6 |
| Geology | 1 |
| Mining | 5 |
| Technology | 1 |