 |
| |||
| advance timbering; cantilever timbering; telescoping support | |||
|
передовое крепление : 8 do fraz, 2 tematyki |
| Geologia | 3 |
| Górnictwo | 5 |
|
| |||
| advance timbering; cantilever timbering; telescoping support | |||
|
передовое крепление : 8 do fraz, 2 tematyki |
| Geologia | 3 |
| Górnictwo | 5 |