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conventionele | energiebronnen
| energiebronnen | |
| environ. | енергийни ресурси |
| conventionele: 15 phrases in 6 subjects |
| Commerce | 4 |
| Electronics | 1 |
| Energy industry | 1 |
| Environment | 4 |
| General | 4 |
| Information technology | 1 |