Columbia subject headings:
Islam--Customs and practices--Early works to 1800.
Islam--Doctrines--Early works to 1800.
Islamic law--Early works to 1800.
Harvard subject headings:
Islam--Customs and practices--Early works to 1800
Islam--Doctrines--Early works to 1800
Islamic law--Early works to 1800.
Princeton subject headings:
Islam--Customs and practices--Early works to 1800.
Islam--Doctrines--Early works to 1800.
Islamic law--Early works to 1800.