 |
| |||
| geology and exploration (MichaelBurov) | |||
| геология и разведка: 3 phrases, 3 sujets |
| Astronautique | 1 |
| Caspienne | 1 |
| Pétrole et gaz | 1 |
|
| |||
| geology and exploration (MichaelBurov) | |||
| геология и разведка: 3 phrases, 3 sujets |
| Astronautique | 1 |
| Caspienne | 1 |
| Pétrole et gaz | 1 |