 |
| densely-populated: 23 phrases in 9 subjects |
| Ecology | 1 |
| Electronics | 1 |
| Energy industry | 2 |
| General | 6 |
| Makarov | 4 |
| Military | 4 |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 3 |
| Technology | 1 |
|
| densely-populated: 23 phrases in 9 subjects |
| Ecology | 1 |
| Electronics | 1 |
| Energy industry | 2 |
| General | 6 |
| Makarov | 4 |
| Military | 4 |
| Natural resourses and wildlife conservation | 1 |
| Nuclear physics | 3 |
| Technology | 1 |