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aer : 164 phrases in 12 subjects |
| Agriculture | 1 |
| Animal husbandry | 2 |
| Chemistry | 7 |
| Communications | 3 |
| Construction | 120 |
| Economy | 2 |
| Environment | 7 |
| Forestry | 6 |
| Municipal planning | 4 |
| Natural sciences | 3 |
| Transport | 8 |
| Ventilation | 1 |
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