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effiċjenza fl | użu tal-enerġija
| użu tal-enerġija | |
| environ. | energiakasutus |
| effiċjenza: 17 phrases in 7 subjects |
| Chemistry | 1 |
| Economy | 2 |
| Energy industry | 7 |
| Environment | 3 |
| Finances | 2 |
| Natural sciences | 1 |
| Transport | 1 |