 |
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| coal-mining (bookworm); mining operations; coal extraction | |||
| coal extraction | |||
| coal mining | |||
| coal output; coal production | |||
|
угледобыча : 2 a las frases, 2 temas |
| Carbón | 1 |
| Geología | 1 |
|
| |||
| coal-mining (bookworm); mining operations; coal extraction | |||
| coal extraction | |||
| coal mining | |||
| coal output; coal production | |||
|
угледобыча : 2 a las frases, 2 temas |
| Carbón | 1 |
| Geología | 1 |