Columbia subject headings:
Harvard subject headings:
Balkan Peninsula--Foreign relations--1989-
Balkan Peninsula--Foreign relations--Greece.
Greece--Foreign relations--1974-
Greece--Foreign relations--Balkan Peninsula.
Macedonian question.
Nationalism--Greece
Princeton subject headings:
Balkan Peninsula--Foreign relations--Greece.
Balkan Peninsula--Politics and government--1989-
Greece--Foreign relations--Balkan Peninsula.
Nationalism--Balkan Peninsula.