https://www.lexpera.com.tr/resmi-gazete/17-02-2008/26790 monthly 2026-07-17T13:32:45Z https://www.lexpera.com.tr/resmi-gazete/metin/havaalani-saglik-denetleme-merkezleri-yonetmeligi-26790 2008-02-17T00:00:00Z