Columbia subject headings:
Harvard subject headings:
Ibn Ṭāhir al-Baghdādī, ʻAbd al-Qāhir, d. 1037. Farq bayna al-firaq.
Islam--Doctrines--Early works to 1800
Islamic sects--Early works to 1800
Shīʻah--Controversial literature--Early works to 1800.
Princeton subject headings:
Islamic sects.