Columbia subject headings:
Christianity and other religions--Islam.
Islam--Relations--Christianity.
Italy--Relations--Turkey.
Religious tolerance--Italy.
Turkey--Relations--Italy.
Harvard subject headings:
Christianity and other religions--Islam
Islam--Relations--Christianity
Italy--Relations--Turkey.
Religious tolerance--Italy.
Turkey--Relations--Italy.
Princeton subject headings:
Christianity and other religions--Islam.
Islam--Relations--Christianity.
Italy--Relations--Turkey.
Religious tolerance--Italy.
Turkey--Relations--Italy.