Columbia subject headings:
Russian language--Dialects--Russia (Federation)--Kurskai︠a︡ oblastʹ--Congresses.
Russian language--Dialects--Russia (Federation)--Voronezhskai︠a︡ oblastʹ--Congresses.
Harvard subject headings:
Russian language--Dialects--Russia (Federation)--Kurskai︠a︡ oblastʹ--Congresses.
Russian language--Dialects--Russia (Federation)--Voronezhskai︠a︡ oblastʹ--Congresses.
Princeton subject headings:
Russian language--Dialects--Congresses.