Columbia subject headings:
Abbasids--History.
Africa, North--History--647-1517.
Kharijites--History.
Umayyad dynasty--History.
Harvard subject headings:
Abbasids--History.
Africa, North--History--647-1517.
Kharijites--History.
Umayyad dynasty--History.
Princeton subject headings:
Abbasids--History.
Africa, North--History--647-1517.
Kharijites--History.
Umayyad dynasty--History.