 |
| |||
| échantillon de formation; échantillon de roche; échantillon de terrain | |||
|
образец породы : 9 phrases in 3 subjects |
| Geology | 3 |
| Mining | 3 |
| Oil and gas technology | 3 |
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