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длинный вариант |
long variation : 16 phrases in 13 subjects |
Astronomy | 1 |
Automated equipment | 1 |
Chess | 2 |
Electronics | 1 |
Geophysics | 1 |
Hydrology | 1 |
Makarov | 2 |
Mathematics | 1 |
Meteorology | 1 |
Metrology | 2 |
Navigation | 1 |
Seismology | 1 |
Technology | 1 |