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| effective radius | |||
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rayon effectif : 4 do fraz, 4 tematyki |
| Elektronika | 1 |
| Geologia | 1 |
| Technika i technologia | 1 |
| Transport | 1 |
|
| |||
| effective radius | |||
|
rayon effectif : 4 do fraz, 4 tematyki |
| Elektronika | 1 |
| Geologia | 1 |
| Technika i technologia | 1 |
| Transport | 1 |