Columbia subject headings:
International rivers--Middle East.
Rivers--Law and legislation--Middle East.
Water resources development--Law and legislation--Euphrates River Watershed.
Water resources development--Law and legislation--Middle East.
Water resources development--Law and legislation--Tigris River Watershed.
Harvard subject headings:
Water resources development--Law and legislation--Euphrates River Watershed.
Princeton subject headings:
Water resources development--Law and legislation--Euphrates River Watershed.
Water resources development--Law and legislation--Tigris River Watershed.