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värähtely : 35 phrases in 11 subjects |
| Communications | 5 |
| Earth sciences | 7 |
| Electronics | 9 |
| Environment | 2 |
| General | 1 |
| Life sciences | 1 |
| Magnetics | 1 |
| Mathematics | 3 |
| Power lines | 1 |
| Statistics | 3 |
| Transport | 2 |
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