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Παραπομπή σε μορφή Chicago (17η εκδ.)European Commission. Electricity from Renewable Energy Sources: Encouraging Green Electricity in Europe. Luxembourg: Office for Official Publications of the European Communities, 2004.
Παραπομπή σε μορφή MLA (8th εκδ.)European Commission. Electricity from Renewable Energy Sources: Encouraging Green Electricity in Europe. Office for Official Publications of the European Communities, 2004.
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