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| концентрация | |||
| содержание (концентрация) | |||
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концентрація : 65 phrases in 9 subjects |
| Aviation | 1 |
| Chemistry | 26 |
| Ecology | 4 |
| Environment | 8 |
| Mathematics | 1 |
| Metallurgy | 15 |
| Microsoft | 1 |
| Road construction | 1 |
| Technology | 8 |
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