 |
| |||
| coal-mining (bookworm); mining operations; coal extraction | |||
| coal mining | |||
| coal extraction | |||
| coal output; coal production | |||
|
угледобыча : 2 phrases, 2 sujets |
| Charbon | 1 |
| Géologie | 1 |
|
| |||
| coal-mining (bookworm); mining operations; coal extraction | |||
| coal mining | |||
| coal extraction | |||
| coal output; coal production | |||
|
угледобыча : 2 phrases, 2 sujets |
| Charbon | 1 |
| Géologie | 1 |