Columbia subject headings:
Harvard subject headings:
Arts--Balkan Peninsula--History--Congresses.
Balkan Peninsula--Civilization--Congresses.
Balkan Peninsula--Ethnic relations--Congresses.
Balkan Peninsula--In literature--Congresses.
Balkan Peninsula--Literatures--Congresses.
Balkan Peninsula--Relations--Europe, German-speaking--Congresses.
Europe, German-speaking--Relations--Balkan Peninsula--Congresses.
German language--Balkan Peninsula--Congresses.
German literature--Balkan Peninsula--History and criticism--Congresses.
Political customs and rites--Balkan Peninsula--Congresses.
Slavs, Southern--Balkan Peninsula--Ethnic identity--Congresses.
Theater--Anthropological aspects--Balkan Peninsula--Congresses.
Princeton subject headings:
Balkan Peninsula--Ethnic identity--Congresses.
Balkan Peninsula--Literatures--History and criticism--Congresses.
German literature--Balkan Peninsula--History and criticism--Congresses.