Columbia subject headings:
Harvard subject headings:
Islamic Empire--History--622-661--Early works to 1800.
ʻAlī ibn Abī Ṭālib, Caliph, approximately 600-661--Campaigns--Early works to 1800.
Princeton subject headings:
Islamic Empire--History--622-661--Early works to 1800.
ʻAlī ibn Abī Ṭālib, Caliph, approximately 600-661--Campaigns--Early works to 1800.