Columbia subject headings:
Ismailites--Doctrines--Early works to 1800.
Karmathians--Doctrines--Early works to 1800.
Harvard subject headings:
Ismailites--Doctrines--Early works to 1800.
Karmathians--Doctrines--Early works to 1800.
Princeton subject headings:
Ismailites--Doctrines--Early works to 1800.
Karmathians--Doctrines--Early works to 1800.