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| главное направление | |||
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main direction : 21 phrases in 12 subjects |
| Antennas and waveguides | 1 |
| Automobiles | 1 |
| Business | 1 |
| General | 2 |
| Makarov | 2 |
| Mass media | 1 |
| Mathematics | 2 |
| Metallurgy | 1 |
| Military | 6 |
| Natural resourses and wildlife conservation | 1 |
| Radioengineering | 1 |
| Technology | 2 |