Columbia subject headings:
Harvard subject headings:
Ethnic groups--Romania--Transylvania--History--Congresses.
Szeklers--Romania--Transylvania--History--Congresses.
Transylvania (Romania)--History--Congresses.
Princeton subject headings:
Ethnic groups--Romania--Transylvania--History--Congresses.
Szeklers--Romania--Transylvania--History--Congresses.
Transylvania (Romania)--History--Congresses.