TY - BOOK ED - World Conference on International Islamic Calendar (1991 : Pulau Pinang) ED - Mohammad Ilyas ED - Zhari Ismail TI - Towards a unified world Islamic calendar: the Penang declaration and world conference report SN - 9839700154 PY - 1992/// CY - Penang, Malaysia PB - University of Science Malaysia KW - Calendar, Islamic KW - Congresses KW - Astronomy KW - Religious aspects KW - Islam ER -