 |
| |||
| скорость волны | |||
| vitesse d'onde: 6 phrases in 3 subjects |
| Hydraulic engineering | 2 |
| Natural resourses and wildlife conservation | 1 |
| Welding | 3 |
|
| |||
| скорость волны | |||
| vitesse d'onde: 6 phrases in 3 subjects |
| Hydraulic engineering | 2 |
| Natural resourses and wildlife conservation | 1 |
| Welding | 3 |