 |
| |||
| каучуковое горючее | |||
| rubber fuel: 6 phrases in 4 subjects |
| Astronautics | 1 |
| Aviation | 2 |
| Firefighting and fire-control systems | 1 |
| Nuclear and fusion power | 2 |
|
| |||
| каучуковое горючее | |||
| rubber fuel: 6 phrases in 4 subjects |
| Astronautics | 1 |
| Aviation | 2 |
| Firefighting and fire-control systems | 1 |
| Nuclear and fusion power | 2 |