вырождение: 82 phrases in 16 subjects |
Agriculture | 1 |
Astronautics | 1 |
Astronomy | 6 |
Biology | 2 |
Chemistry | 10 |
Ecology | 2 |
Environment | 3 |
Forestry | 2 |
General | 3 |
Mathematics | 6 |
Medical | 1 |
Natural resourses and wildlife conservation | 2 |
Physics | 16 |
Radio | 4 |
Technology | 21 |
United Nations | 2 |