 |
| |||
| carbonification des charbons; évolution des houilles | |||
| |||
| évolution de ia houille | |||
| évolution de la houille | |||
|
метаморфизм углей : 9 phrases in 2 subjects |
| Geology | 7 |
| Mining | 2 |
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips