 |
| |||
| barrage | |||
| reservoir dam | |||
| Absperrbauwerk: 3 phrases in 3 subjects |
| General | 1 |
| Mechanic engineering | 1 |
| Natural resourses and wildlife conservation | 1 |
|
| |||
| barrage | |||
| reservoir dam | |||
| Absperrbauwerk: 3 phrases in 3 subjects |
| General | 1 |
| Mechanic engineering | 1 |
| Natural resourses and wildlife conservation | 1 |