 |
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| источники энергии и эффективное использование энергоресурсов | |||
| energy and energy efficiency: 19 phrases in 10 subjects |
| Ecology | 2 |
| Education | 1 |
| Energy industry | 8 |
| Energy system | 1 |
| European Union | 1 |
| General | 1 |
| Geophysics | 1 |
| Rail transport | 1 |
| United Nations | 2 |
| United States | 1 |