https://www.lexpera.com.tr/resmi-gazete/24-10-1990/20675 monthly 2026-07-21T06:04:16Z https://www.lexpera.com.tr/resmi-gazete/metin/mecburi-standart-90-73-74-sayili-teblig-20675 1990-10-24T00:00:00Z