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| первичные энергоресурсы; первичная энергия | |||
| природная энергия | |||
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énergie primaire : 8 phrases in 6 subjects |
| Astronautics | 1 |
| Environment | 1 |
| Forestry | 2 |
| General | 2 |
| Hydraulic engineering | 1 |
| Natural resourses and wildlife conservation | 1 |
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