Columbia subject headings:
Iran--History--20th century--Sources.
Iran--History--Qajar dynasty, 1794-1925--Sources.
Iran--Politics and government--19th century--Sources.
Iran--Politics and government--20th century--Sources.
Harvard subject headings:
Great Britain--Foreign relations--Iran--Sources.
Iran--Foreign relations--Great Britain--Sources.
Iran--Politics and government--19th century--Sources.
Iran--Politics and government--20th century--Sources.
Princeton subject headings:
Iran--History--20th century--Sources.
Iran--History--Qajar dynasty, 1794-1925--Sources.
Iran--Politics and government--19th century--Sources.
Iran--Politics and government--20th century--Sources.