Columbia subject headings:
God (Islam)--Early works to 1800.
Islam--Doctrines--Early works to 1800.
Harvard subject headings:
Islam--Doctrines--Early works to 1800
Zaydīs--Early works to 1800.
Princeton subject headings:
God (Islam)--Early works to 1800.
Islam--Doctrines--Early works to 1800.