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| дерево с корнем: 32 phrases in 9 subjects |
| Computer networks | 1 |
| Environment | 2 |
| Forestry | 3 |
| General | 6 |
| Makarov | 10 |
| Mass media | 2 |
| Mathematics | 4 |
| Pulp and paper industry | 1 |
| Technology | 3 |
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