Columbia subject headings:
Hungarians--Romania--History.
Transylvania (Romania)--History.
Harvard subject headings:
Hungarians--Romania--Transylvania--History.
Transylvania (Romania)--Ethnic relations.
Transylvania (Romania)--History.
Princeton subject headings:
Hungarians--Romania--Transylvania--History.
Social history--Medieval, 500-1500.
Transylvania (Romania)--Ethnic relations.
Transylvania (Romania)--History.