Columbia subject headings:
Iraq--History--Hashemite Kingdom, 1921-1958.
Iraq--Politics and government--1921-1958.
Harvard subject headings:
Iraq--History--Hashimite Kingdom, 1921-1958.
Iraq--Politics and government--20th century
Princeton subject headings:
Iraq--History--Hashemite Kingdom, 1921-1958.
Iraq--Politics and government--1921-1958.