| |||
| fossil fuels | |||
| carbon minerals | |||
| |||
| fossil fuel | |||
|
fossile Brennstoffe : 9 phrases in 4 subjects |
| Electronics | 1 |
| Energy industry | 4 |
| Environment | 3 |
| General | 1 |
| |||
| fossil fuels | |||
| carbon minerals | |||
| |||
| fossil fuel | |||
|
fossile Brennstoffe : 9 phrases in 4 subjects |
| Electronics | 1 |
| Energy industry | 4 |
| Environment | 3 |
| General | 1 |