Columbia subject headings:
Christianity and other religions--Islam.
Islam--Relations--Christianity.
Missionaries--Middle East.
Missions, American--Middle East.
Missions, American--Turkey.
Harvard subject headings:
Christianity and other religions--Islam
Islam--Relations--Christianity
Missionaries--Middle East.
Missions, American--Middle East.
Missions, American--Turkey.
Princeton subject headings:
Christianity and other religions--Islam.
Islam--Relations--Christianity.
Missionaries--Middle East.
Missions, American--Middle East.
Missions, American--Turkey.