Columbia subject headings:
Güneydoğu Anadolu Projesi (Turkey)
Water resources development--Middle East.
Water-supply--Middle East.
Harvard subject headings:
Euphrates River.
Tigris River
Water-supply--Middle East
Water-supply--Turkey.
Princeton subject headings:
Euphrates River.
Tigris River.
Water-supply--Middle East.
Water-supply--Turkey.