 |
| |||
| composition of coal | |||
| состав угля: 13 phrases in 6 subjects |
| Energy industry | 2 |
| Gas processing plants | 2 |
| General | 1 |
| Geology | 3 |
| Makarov | 4 |
| Rail transport | 1 |
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