Columbia subject headings:
Harvard subject headings:
Christianity and other religions--Islam--Early works to 1800.
Islam--Relations--Christianity--Early works to 1800.
Islamic Empire.
Jesus Christ--History of doctrines--Early works to 1800.
Princeton subject headings:
Apologetics--Early works to 1800.
Christianity and other religions--Islam--Early works to 1800.
Islam--Controversial literature--Early works to 1800.
Islam--Relations--Christianity--Early works to 1800.
William, of Tripoli, approximately 1220-1277.