Columbia subject headings:
Petroleum industry and trade--Middle East--History.
Petroleum industry and trade--Political aspects--Middle East--History.
Harvard subject headings:
Middle East--Politics and government--20th century.
Petroleum industry and trade--Political aspects--Middle East
Petroleum industry and trade--Political aspects--Middle East--History.
Petroleum industry and trade--Political aspects--Turkey.
Turkey--Politics and government--20th century.
World politics--20th century
Princeton subject headings:
Middle East--Politics and government.
Petroleum industry and trade--Political aspects--Middle East.
Petroleum industry and trade--Political aspects--Turkey.
Turkey--Politics and government.
World politics--20th century.