Columbia subject headings:
Harvard subject headings:
Europe, Eastern--Ethnic relations.
Europe, Eastern--Politics and government.
Minorities--Europe, Eastern
Nationalism--Europe, Eastern
Princeton subject headings:
Balkan Peninsula--Ethnic relations--Congresses.
Europe, Eastern--Ethnic relations--Congresses.
Nationalism--Balkan Peninsula--Congresses.
Nationalism--Europe, Eastern--Congresses.