| |||
| subsurface drilling; underground boring; underground drilling | |||
|
подземное бурение : 17 do fraz, 5 tematyki |
| Górnictwo | 7 |
| Pola naftowe | 2 |
| Ropa / ropa naftowa | 6 |
| Sachalin | 1 |
| Wiercenie | 1 |
| |||
| subsurface drilling; underground boring; underground drilling | |||
|
подземное бурение : 17 do fraz, 5 tematyki |
| Górnictwo | 7 |
| Pola naftowe | 2 |
| Ropa / ropa naftowa | 6 |
| Sachalin | 1 |
| Wiercenie | 1 |