Columbia subject headings:
Harvard subject headings:
Romania--Relations--Yugoslavia--Congresses.
Romanian language--Dialects--Congresses.
Serbo-Croatian language--Dialects--Congresses.
Yugoslavia--Relations--Romania--Congresses.
Princeton subject headings:
Languages in contact--Balkan Peninsula--Congresses.
Romanian language--Congresses.
Romanian language--Dialects--Congresses.
Serbo-Croatian language--Dialects--Congresses.
Yugoslavia--Language--Congresses.