 |
| |||
| horizontal excavation | |||
| way | |||
| drive; lateral; level | |||
| drift (MichaelBurov) | |||
|
горизонтальная горная выработка : 5 do fraz, 3 tematyki |
| Geologia | 1 |
| Górnictwo | 3 |
| Technika i technologia | 1 |
|
| |||
| horizontal excavation | |||
| way | |||
| drive; lateral; level | |||
| drift (MichaelBurov) | |||
|
горизонтальная горная выработка : 5 do fraz, 3 tematyki |
| Geologia | 1 |
| Górnictwo | 3 |
| Technika i technologia | 1 |