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| hydroelectric | |||
| hydroelectrical | |||
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hydroelektrisch : 19 phrases in 10 subjects |
| Economics | 1 |
| Energy industry | 4 |
| Environment | 2 |
| General | 2 |
| Measuring instruments | 1 |
| Mechanic engineering | 1 |
| Medical appliances | 3 |
| Natural resourses and wildlife conservation | 3 |
| Physics | 1 |
| Statistics | 1 |