Columbia subject headings:
Islam--Africa, North--Doctrines--History.
Islamic sects--Africa, North--History.
Harvard subject headings:
Ibadites
Islam--Doctrines
Islamic sects--Africa, North--History.
Islamic sects--Doctrines.
Motazilites
Shiites
Sunnites
Princeton subject headings:
Islam--Africa, North--Doctrines--History.
Islamic sects--Africa, North--History.