Columbia subject headings:
Islam--Customs and practices.
Islam--Doctrines.
Islam--Unity.
Islamic law--Interpretation and construction.
Islamic sects.
Harvard subject headings:
Islam--Customs and practices
Islam--Doctrines
Islam--Unity
Islamic law--Interpretation and construction.
Islamic sects.
Princeton subject headings:
Islam--Customs and practices.
Islam--Doctrines.
Islamic law--History.
Islamic law--Interpretation and construction.
Islamic sects.