Columbia subject headings:
Water resources development--Arab countries--Congresses.
Water resources development--Political aspects--Middle East--Congresses.
Water-supply--Arab countries--Congresses.
Harvard subject headings:
Water resources development--Arab countries--Congresses.
Water-supply--Arab countries--Congresses.
Water-supply--Political aspects--Arab countries--Congresses.
Princeton subject headings:
Water resources development--Arab countries--Congresses.
Water resources development--Political aspects--Arab countries--Congresses.
Water-supply--Arab countries--Congresses.