Columbia subject headings:
Harvard subject headings:
Balkan Peninsula--Foreign relations--European Union countries.
Balkan Peninsula--Politics and government--1989-
European Union
European Union countries--Foreign relations--Balkan Peninsula.
Nation-building--Balkan Peninsula.
Princeton subject headings:
Balkan Peninsula--Foreign relations--European Union countries.
Balkan Peninsula--Politics and government--1989-
European Union countries--Foreign relations--Balkan Peninsula.
European Union.
Nation-building--Balkan Peninsula.