 |
| |||
| foyer à charbon | |||
| coal firing: 7 phrases in 4 subjects |
| Coal | 1 |
| Materials science | 1 |
| Natural resourses and wildlife conservation | 4 |
| Transport | 1 |
|
| |||
| foyer à charbon | |||
| coal firing: 7 phrases in 4 subjects |
| Coal | 1 |
| Materials science | 1 |
| Natural resourses and wildlife conservation | 4 |
| Transport | 1 |