Columbia subject headings:
Iraq--Economic policy--20th century.
Iraq--Politics and government--20th century.
Petroleum industry and trade--Iraq--History--20th century.
Harvard subject headings:
Iraq--Economic policy--History--20th century.
Iraq--Politics and government--20th century.
Petroleum industry and trade--Iraq--History--20th century.
Princeton subject headings:
Iraq--Economic policy--History--20th century.
Iraq--Politics and government--20th century.
Petroleum industry and trade--Iraq--History--20th century.