 |
| |||
| Teil eines Stromes | |||
| partial flow: 6 phrases in 5 subjects |
| Automobiles | 2 |
| Biology | 1 |
| General | 1 |
| Natural resourses and wildlife conservation | 1 |
| Sewage and wastewater treatment | 1 |
|
| |||
| Teil eines Stromes | |||
| partial flow: 6 phrases in 5 subjects |
| Automobiles | 2 |
| Biology | 1 |
| General | 1 |
| Natural resourses and wildlife conservation | 1 |
| Sewage and wastewater treatment | 1 |