 |
| |||
| Flußperlmuschel f | |||
| Margaritifera margaritifera: 6 phrases in 3 subjects |
| Biology | 2 |
| Fish farming pisciculture | 2 |
| Natural resourses and wildlife conservation | 2 |
|
| |||
| Flußperlmuschel f | |||
| Margaritifera margaritifera: 6 phrases in 3 subjects |
| Biology | 2 |
| Fish farming pisciculture | 2 |
| Natural resourses and wildlife conservation | 2 |