 |
| |||
| geklaertes Wasser | |||
| gereinigtes Wasser | |||
| eau épurée: 5 phrases in 4 subjects |
| Construction | 2 |
| Environment | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 1 |
|
| |||
| geklaertes Wasser | |||
| gereinigtes Wasser | |||
| eau épurée: 5 phrases in 4 subjects |
| Construction | 2 |
| Environment | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 1 |