Columbia subject headings:
Islamic sects--Early works to 1800.
Motazilites--Early works to 1800.
Harvard subject headings:
Islam and philosophy--Early works to 1800
Islamic sects--Early works to 1800.
Motazilites--Early works to 1800.
Princeton subject headings:
Islam and philosophy--Early works to 1800.
Islamic sects--Early works to 1800.
Motazilites--Early works to 1800.