Columbia subject headings:
Bedouins--Congresses.
Nomads--Middle East--Congresses.
Tribes--Middle East--Congresses.
Harvard subject headings:
Bedouins--Middle East--History--Congresses.
Ethnology--Middle East--History--Congresses.
Middle East--History--Congresses.
Nomads--Middle East--History--Congresses.
Princeton subject headings:
Bedouins--Congresses.
Nomads--Middle East--Congresses.
Tribes--Middle East--Congresses.