Columbia subject headings:
Iran--Foreign relations--Turkey--Sources.
Iran--History--Qajar dynasty, 1794-1925--Sources.
Turkey--Foreign relations--Iran--Sources.
Turkey--History--19th century--Sources.
Harvard subject headings:
Iran--Foreign relations--Turkey--Sources.
Iran--History--Qajar dynasty, 1794-1925--Sources
Turkey--Foreign relations--Iran--Sources.
Turkey--History--19th century--Sources.
Princeton subject headings:
Iran--Foreign relations--Turkey--Sources.
Iran--History--Qajar dynasty, 1794-1925.
Turkey--Foreign relations--Iran--Sources.
Turkey--History--19th century.