https://www.lexpera.com.tr/resmi-gazete/09-06-1997/23014 monthly 2026-07-22T06:30:33Z https://www.lexpera.com.tr/resmi-gazete/metin/cam-izolatorler-anma-gerilimi-1000-va-kadar-olan-elektrik-hava-hatlari-icin-standardinin-yururluge-1 1997-06-09T00:00:00Z https://www.lexpera.com.tr/resmi-gazete/metin/mecburi-standart-97-20-21-sayili-teblig-23014 1997-06-09T00:00:00Z