Towards a unified world Islamic calendar  the Penang declaration and world conference report 
edited by Mohammad Ilyas and Zhari Ismail 
 - Penang, Malaysia  University of Science Malaysia  1992 
 - 178 p. ; 23 cm. 
<br/><br/><label>ISBN: </label>9839700154  RM48.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calendar, Islamic--Congresses<br/>Astronomy--Religious aspects--Islam--Congresses