Columbia subject headings:
Water resources development--Middle East.
Water resources development--Nile River Valley.
Water-supply--Middle East.
Water-supply--Nile River Valley.
Water-supply--Political aspects--Middle East.
Water-supply--Political aspects--Nile River Valley.
Harvard subject headings:
Water resources development--Middle East
Water resources development--Nile River Valley.
Water-supply--Middle East
Water-supply--Nile River Valley.
Water-supply--Political aspects--Middle East
Water-supply--Political aspects--Nile River Valley.
Princeton subject headings:
Water resources development--Middle East.
Water resources development--Nile River Valley.
Water-supply--Middle East.
Water-supply--Nile River Valley.
Water-supply--Political aspects--Middle East.
Water-supply--Political aspects--Nile River Valley.