The Archaeo-logical and Historical Association of Pakistan in collaboration with International Islamic University will arrange international conference on Hazrat Ghous Baha-ud-Din Zakaria, here on Saturday (tomorrow). It will highlight the services of Hazrat Shahbaz Qalandar, Hazrat Baba Farid ud Din Gunj Shakar, Hazrat Nizam ud Din Aulia rendered seven hundred years ago, says a press release here on Thursday.