Columbia subject headings:
Harvard subject headings:
Austria--Civilization--Congresses.
Austria--Relations--Balkan Peninsula--Congresses.
Balkan Peninsula--Civilization--Congresses.
Balkan Peninsula--Intellectual life--Congresses.
Balkan Peninsula--Languages--Congresses.
Balkan Peninsula--Relations--Austria--Congresses.
Balkan literature--Foreign influences--History and criticism--Congresses.
Culture in literature--Congresses.
German literature--Balkan Peninsula--History and criticism--Congresses.
Princeton subject headings:
Austria--Relations--Balkan Peninsula--Congresses.
Balkan Peninsula--Intellectual life--Congresses.
Balkan Peninsula--Languages--Congresses.
Balkan Peninsula--Relations--Austria--Congresses.
Balkan literature--Foreign influences--History and criticism--Congresses.
Culture in literature--Congresses.
German literature--Balkan Peninsula--History and criticism--Congresses.