Columbia subject headings:
Christianity and other religions--Congresses.
Islam--Relations--Christianity--Congresses.
Harvard subject headings:
Christianity and other religions--Islam--Congresses
Human rights--Religious aspects--Christianity--Congresses.
Human rights--Religious aspects--Islam--Congresses.
Islam--Relations--Christianity--Congresses
Princeton subject headings:
Christianity and other religions--Congresses.
Islam--Relations--Christianity--Congresses.