https://385.lhlogismiki.gr/book/%ce%b5%ce%b3%cf%87%ce%b5%ce%b9%cf%81%ce%af%ce%b4%ce%bf-%ce%b5%cf%80%ce%b1%ce%bb%ce%ae%ce%b8%ce%b5%cf%85%cf%83%ce%b7%cf%82/ 2019-05-27T15:24:46+00:00 monthly 0.6