 |
| |||
| mining and chemical (Leonid Dzhepko) | |||
| горно-химический: 14 a las frases, 7 temas |
| Caspio | 1 |
| General | 1 |
| Industria | 1 |
| Industria energetica | 2 |
| Metalurgia | 1 |
| Minería | 7 |
| Tecnología | 1 |
|
| |||
| mining and chemical (Leonid Dzhepko) | |||
| горно-химический: 14 a las frases, 7 temas |
| Caspio | 1 |
| General | 1 |
| Industria | 1 |
| Industria energetica | 2 |
| Metalurgia | 1 |
| Minería | 7 |
| Tecnología | 1 |