A modern guide to astronomical calculations of Islamic calendar, times & Qibla.

by Mohammad Ilyas
Published 1984

Calendar in Islamic civilization : modern issues Mohammad Ilyas.

by Mohammad Ilyas
Published 1999

Sistem kalendar islam dari perspektif astronomi Mohammad Ilyas.

by Mohammad Ilyas
Published 1997

Kalendar, masa dan manusia Mohammmad Ilyas.

by Mohammad Ilyas
Published 2002