 |
| |||
| charbon à chaudières; houille de chaudière | |||
| |||
| charbon de chaudière | |||
| boiler-coal: 6 phrases in 3 subjects |
| General | 1 |
| Metallurgy | 4 |
| Natural resourses and wildlife conservation | 1 |
|
| |||
| charbon à chaudières; houille de chaudière | |||
| |||
| charbon de chaudière | |||
| boiler-coal: 6 phrases in 3 subjects |
| General | 1 |
| Metallurgy | 4 |
| Natural resourses and wildlife conservation | 1 |