Columbia subject headings:
Middle East--Politics and government.
Petroleum industry and trade--Middle East.
Petroleum industry and trade--Soviet Union.
Soviet Union--Foreign relations.
Harvard subject headings:
Middle East--Politics and government.
Petroleum industry and trade--Middle East
Petroleum industry and trade--Soviet Union
Soviet Union--Foreign relations.
Princeton subject headings:
Middle East--Politics and government.
Petroleum industry and trade--Middle East.
Petroleum industry and trade--Soviet Union.
Soviet Union--Foreign relations.