Columbia subject headings:
Turkey--Foreign relations--Balkan Peninsula.
Turkey--Foreign relations--Caucasus.
Turkey--Foreign relations--Middle East.
Harvard subject headings:
Balkan Peninsula--Foreign relations--Turkey--Congresses.
Caucasus--Foreign relations--Turkey--Congresses.
Middle East--Foreign relations--Turkey--Congresses.
Turkey--Foreign relations--Balkan Peninsula--Congresses.
Turkey--Foreign relations--Caucasus--Congresses.
Turkey--Foreign relations--Middle East--Congresses.
Princeton subject headings:
Turkey--Foreign relations--Balkan Peninsula.
Turkey--Foreign relations--Caucasus.
Turkey--Foreign relations--Middle East.