Columbia subject headings:
Harvard subject headings:
Christianity and other religions--Islam--Congresses
Christians--Palestine--Congresses.
Islam--Relations--Christianity--Congresses
Muslims--Palestine--Congresses.
Palestine--Ethnic relations--Congresses.
Princeton subject headings:
Christianity and other religions--Islam--Congresses.
Christians--Palestine--Congresses.
Islam--Relations--Christianity--Congresses.
Muslims--Palestine--Congresses.
Palestine--Ethnic relations--Congresses.