 |
| |||
| system poprzeczny; układ poprzeczny | |||
|
система разработки с выемкой по падению пласта : 12 phrases in 3 subjects |
| Mining | 8 |
| Opencast mining | 1 |
| Subsurface mining | 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