Columbia subject headings:
Egypt--History--640-1250.
Islamic Empire--History--661-750.
Marwān ibn al-Ḥakam, Caliph, -685.
Harvard subject headings:
Egypt--History--640-1250
Islamic Empire--History--661-750
Marwān ibn al-Ḥakam, Caliph, -685
Princeton subject headings:
Egypt--History--640-1250.
Islamic Empire--History--661-750.
Marwān ibn al-Ḥakam, Caliph, -685.