Columbia subject headings:
Middle East--Economic conditions.
Middle East--Foreign relations.
Middle East--Strategic aspects.
Petroleum industry and trade--Middle East.
Harvard subject headings:
Middle East--Economic conditions.
Middle East--Foreign relations.
Middle East--Strategic aspects.
Petroleum industry and trade--Middle East
Princeton subject headings:
Middle East--Economic conditions.
Middle East--Foreign relations.
Middle East--Strategic aspects.
Petroleum industry and trade--Middle East.