 |
| |||
| weekly dose | |||
|
недельная доза : 3 phrases in 2 subjects |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 2 |
|
| |||
| weekly dose | |||
|
недельная доза : 3 phrases in 2 subjects |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 2 |