 |
| |||
| segregation of oil and water | |||
| разделение воды и нефти: 4 do fraz, 3 tematyki |
| Ropa / ropa naftowa | 1 |
| Sachalin | 2 |
| Technika i technologia | 1 |
|
| |||
| segregation of oil and water | |||
| разделение воды и нефти: 4 do fraz, 3 tematyki |
| Ropa / ropa naftowa | 1 |
| Sachalin | 2 |
| Technika i technologia | 1 |