ΟΓΚΟΣ ΚΥΛΙΝΔΡΟΥ

 https://atheo.gr/71-%cf%84%cf%8d%cf%80%ce%bf%cf%82-%cf%83%cf%85%ce%bd%cf%84%ce%b7%cf%81%ce%b7%cf%84%ce%b9%ce%ba%cf%8c%cf%82-%cf%8c%ce%b3%ce%ba%ce%bf%cf%82-%ce%ba%cf%85%ce%bb%ce%af%ce%bd%ce%b4%cf%81%ce%bf%cf%85/