 |
| |||
| plain core barrel; single-core barrel; single-tube core barrel | |||
| single core barrel | |||
|
Einfachkernrohr : 8 phrases, 3 sujets |
| Exploitation minière | 2 |
| Forage | 3 |
| Technologie | 3 |
|
| |||
| plain core barrel; single-core barrel; single-tube core barrel | |||
| single core barrel | |||
|
Einfachkernrohr : 8 phrases, 3 sujets |
| Exploitation minière | 2 |
| Forage | 3 |
| Technologie | 3 |