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declive : 46 phrases in 16 subjects |
| Agriculture | 3 |
| Coal | 3 |
| Earth sciences | 3 |
| Electric traction | 1 |
| Electronics | 8 |
| Environment | 1 |
| General | 3 |
| Life sciences | 9 |
| Mathematics | 1 |
| Mechanic engineering | 2 |
| Natural sciences | 1 |
| Nuclear physics | 1 |
| Rail transport | 1 |
| Scientific | 1 |
| Statistics | 4 |
| Transport | 4 |
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