 |
| |||
| показательный период; характерный период | |||
| significant period: 6 phrases in 6 subjects |
| Hydrology | 1 |
| Ice formation | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nautical | 1 |
| Navigation | 1 |
| Oceanography & oceanology | 1 |
|
| |||
| показательный период; характерный период | |||
| significant period: 6 phrases in 6 subjects |
| Hydrology | 1 |
| Ice formation | 1 |
| Natural resourses and wildlife conservation | 1 |
| Nautical | 1 |
| Navigation | 1 |
| Oceanography & oceanology | 1 |