 |
| |||
| 全稳定的 | |||
|
fully- stabilized : 4 do fraz, 4 tematyki |
| Hutnictwo | 1 |
| Ropa / ropa naftowa | 1 |
| Technika i technologia | 1 |
| Wiercenie | 1 |
|
| |||
| 全稳定的 | |||
|
fully- stabilized : 4 do fraz, 4 tematyki |
| Hutnictwo | 1 |
| Ropa / ropa naftowa | 1 |
| Technika i technologia | 1 |
| Wiercenie | 1 |