| |||
| классификация запасов | |||
|
classification of reserves : 6 phrases in 4 subjects |
| General | 1 |
| Gold mining | 1 |
| Mining | 3 |
| Oil and gas | 1 |
| |||
| классификация запасов | |||
|
classification of reserves : 6 phrases in 4 subjects |
| General | 1 |
| Gold mining | 1 |
| Mining | 3 |
| Oil and gas | 1 |