Columbia subject headings:
Christianity and other religions--Islam.
Islam--Apologetic works.
Islam--Relations--Christianity.
Islam--Study and teaching--Europe.
Islam--Study and teaching.
Orientalists.
Harvard subject headings:
Christianity and other religions--Islam
Islam--Apologetic works
Islam--Relations--Christianity
Islam--Study and teaching
Islam--Study and teaching--Europe
Middle East specialists.
Princeton subject headings:
Islam--Study and teaching.
Orientalists