(1999). Sixth Periodic Report on the social and economic situation and development of the regions of the European Union. Luxembourg: Office for Official Publications of the European Communities.
Παραπομπή Chicago StyleSixth Periodic Report On the Social and Economic Situation and Development of the Regions of the European Union. Luxembourg: Office for Official Publications of the European Communities, 1999.
Παραπομπή MLASixth Periodic Report On the Social and Economic Situation and Development of the Regions of the European Union. Luxembourg: Office for Official Publications of the European Communities, 1999.
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