 |
| |||
| столбовая выемка | |||
| exploitation par piliers: 41 phrases in 4 subjects |
| Construction | 1 |
| Mining | 37 |
| Natural resourses and wildlife conservation | 1 |
| Technology | 2 |
|
| |||
| столбовая выемка | |||
| exploitation par piliers: 41 phrases in 4 subjects |
| Construction | 1 |
| Mining | 37 |
| Natural resourses and wildlife conservation | 1 |
| Technology | 2 |