 |
| grey whales: 12 phrases in 4 subjects |
| Fish farming pisciculture | 1 |
| Ichthyology | 1 |
| Mammals | 7 |
| Natural resourses and wildlife conservation | 3 |
|
| grey whales: 12 phrases in 4 subjects |
| Fish farming pisciculture | 1 |
| Ichthyology | 1 |
| Mammals | 7 |
| Natural resourses and wildlife conservation | 3 |