https://www.lexpera.com.tr/resmi-gazete/24-02-1989/20090 monthly 2026-07-22T06:30:33Z https://www.lexpera.com.tr/resmi-gazete/metin/506-sayili-sosyal-sigortalar-kanununun-bir-maddesinin-degistirilmesi-ve-bu-kanuna-bir-gecici-madde-2 1989-02-24T00:00:00Z