 |
|
loading surface : 16 phrases in 10 subjects |
| Astronautics | 4 |
| Aviation | 1 |
| Construction | 1 |
| Ecology | 1 |
| Makarov | 1 |
| Natural resourses and wildlife conservation | 1 |
| Space | 2 |
| Technology | 3 |
| Water resources | 1 |
| Water supply | 1 |
|
|
loading surface : 16 phrases in 10 subjects |
| Astronautics | 4 |
| Aviation | 1 |
| Construction | 1 |
| Ecology | 1 |
| Makarov | 1 |
| Natural resourses and wildlife conservation | 1 |
| Space | 2 |
| Technology | 3 |
| Water resources | 1 |
| Water supply | 1 |