Columbia subject headings:
Names, Geographical--Russia (Federation)--Voronezhskai︠a︡ oblastʹ--Dictionaries.
Voronezhskai︠a︡ oblastʹ (Russia)--Encyclopedias.
Voronezhskai︠a︡ oblastʹ (Russia)--History, Local.
Harvard subject headings:
Russian language--Etymology--Names.
Princeton subject headings:
Russian language--Etymology--Names.