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| наблюдательский | |||
| наблюдательный | |||
| обсервационный; смотровой | |||
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obserwacyjny : 50 phrases in 15 subjects |
| Agriculture | 3 |
| Aviation | 1 |
| Construction | 7 |
| Electrical engineering | 3 |
| Electronics | 1 |
| Environment | 1 |
| General | 4 |
| Hydrogeology | 1 |
| Machine components | 1 |
| Mathematics | 1 |
| Metallurgy | 2 |
| Mining | 5 |
| Optics branch of physics | 2 |
| Surveying | 1 |
| Technology | 17 |
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