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| симметрия плоскости: 22 phrases in 10 subjects |
| Aviation | 6 |
| Chemistry | 1 |
| Crystallography | 1 |
| Geology | 5 |
| Mathematics | 2 |
| Mechanic engineering | 1 |
| Metallurgy | 2 |
| Mineralogy | 1 |
| Physics | 2 |
| Radio | 1 |
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