https://www.lexpera.com.tr/resmi-gazete/23-12-1988/20028 monthly 2026-07-22T06:30:33Z https://www.lexpera.com.tr/resmi-gazete/metin/bogazici-universitesi-kutuphane-ve-dokumantasyon-daire-baskanligi-yonetmeligi-20028 1988-12-23T00:00:00Z