 |
| |||
| программа шнекового бурения (Leonid Dzhepko) | |||
|
auger program : 5 phrases in 3 subjects |
| Gold mining | 3 |
| Production | 1 |
| Technology | 1 |
|
| |||
| программа шнекового бурения (Leonid Dzhepko) | |||
|
auger program : 5 phrases in 3 subjects |
| Gold mining | 3 |
| Production | 1 |
| Technology | 1 |