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sounding vertical : 24 phrases in 13 subjects |
| Antennas and waveguides | 1 |
| Astronautics | 1 |
| Electronics | 1 |
| Geology | 1 |
| Geophysics | 3 |
| Makarov | 1 |
| Mass media | 3 |
| Mathematics | 1 |
| Navigation | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 3 |
| Physics | 2 |
| Technology | 5 |
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