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