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| καταπολέμηση της ρύπανσης | |||
| έλεγχος ρύπανσης; αντιρρυπαντική προστασία | |||
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luta contra a poluição : 12 phrases in 3 subjects |
| Environment | 8 |
| Health care | 1 |
| Transport | 3 |
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