 |
| |||
| Donau m | |||
| Donau m (Danubius) | |||
| Danube: 79 phrases in 12 subjects |
| Entomology | 1 |
| Environment | 14 |
| Finances | 1 |
| Fish farming pisciculture | 23 |
| Food industry | 6 |
| General | 14 |
| Geography | 1 |
| Ichthyology | 7 |
| Law | 4 |
| Natural resourses and wildlife conservation | 1 |
| Politics | 1 |
| Transport | 6 |