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self -registering : 25 phrases in 12 subjects |
Aerohydrodynamics | 2 |
Agriculture | 2 |
Astronautics | 3 |
Astronomy | 2 |
Electronics | 1 |
Hydraulic engineering | 1 |
Makarov | 5 |
Nautical | 4 |
Navigation | 1 |
Oceanography & oceanology | 1 |
Technology | 2 |
Telecommunications | 1 |