Columbia subject headings:
Harvard subject headings:
Banat--History--Sources.
Bulgaria--Emigration and immigration--History.
Bulgarians--Banat--History--Sources.
Bulgarians--Yugoslavia--Vojvodina (Serbia)--History--Sources.
Transylvania (Romania)--History--Sources.
Princeton subject headings:
Banat--Social life and customs.
Bulgarians--Banat.
Bulgarians--Romania--Transylvania.
Transylvania (Romania)--Social life and customs.