https://www.lexpera.com.tr/resmi-gazete/28-01-1970/13411 monthly 2026-07-17T04:48:11Z https://www.lexpera.com.tr/resmi-gazete/metin/cumhurbaskanligi-senfoni-orkestrasi-yonetmeligi-13411 1970-01-28T00:00:00Z