Columbia subject headings:
Afghanistan--Foreign relations--Iran--Sources.
Iran--Foreign relations--Afghanistan--Sources.
Iran--History--Qajar dynasty, 1794-1925--Sources.
Harvard subject headings:
Afghanistan--Foreign relations--Iran--Sources.
Iran--Foreign relations--Afghanistan--Sources.
Iran--History--Qajar dynasty, 1794-1925--Sources.
Princeton subject headings:
Afghanistan--Foreign relations--Iran--Sources.
Iran--Foreign relations--Afghanistan--Sources.
Iran--History--Qajar dynasty, 1794-1925--Sources.