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https://www.humanistforum.org/el/%cf%80%ce%bf%ce%b9%ce%bf%ce%af-%ce%b5%ce%af%ce%bc%ce%b1%cf%83%cf%84%ce%b5/%ce%b9%cf%83%cf%84%ce%bf%cf%81%ce%b9%ce%ba%cf%8c/%ce%bb%ce%b9%cf%83%ce%b1%ce%b2%cf%8c%ce%bd%ce%b1-2006/
Λισαβόνα 2006