Columbia subject headings:
Harvard subject headings:
Caliphate--History
Imamate--History.
Islam and state
Islamic Empire--History--622-661
Shīʻah--Doctrines
ʻAlī ibn Abī Ṭālib, Caliph, approximately 600-661--Imamate.
Princeton subject headings:
Caliphate--History.
Imamate--History.
Islam and state.
Islamic Empire--History--622-661.
Shīʻah--Doctrines.
ʻAlī ibn Abī Ṭālib, Caliph, approximately 600-661--Imamate.