Columbia subject headings:
Environmental policy--Middle East--Congresses.
Environmental protection--Middle East--Congresses.
Middle East--Economic conditions--Congresses.
Middle East--Environmental conditions--Congresses.
Middle East--Foreign relations--Congresses.
Middle East--Social conditions--Congresses.
Harvard subject headings:
Environmental economics--Middle East--Congresses.
Environmental policy--Middle East--Congresses.
Environmental protection--Middle East--Congresses.
Princeton subject headings:
Environmental economics--Middle East--Congresses.
Environmental policy--Middle East--Congresses.
Environmental protection--Middle East--Congresses.