Columbia subject headings:
Iran--Foreign relations--Turkey--Sources.
Iran. Treaties, etc. 1848.
Turkey--Foreign relations--Iran--Sources.
Harvard subject headings:
Iran--Foreign relations--Turkey--Sources.
Iran. Treaties, etc. 1848.
Turkey--Foreign relations--Iran--Sources.
Princeton subject headings:
Iran--Foreign relations--Turkey--Sources.
Iran. Treaties, etc., 1848.
Turkey--Foreign relations--Iran--Sources.