https://www.lexpera.com.tr/resmi-gazete/18-10-1991/21025 monthly 2026-07-17T04:48:11Z https://www.lexpera.com.tr/resmi-gazete/metin/ulastirma-bakanligi-teftis-kurulu-yonetmeligi-21025-2 1991-10-18T00:00:00Z