Columbia subject headings:
Russian language--Dialects--Phonology.
Russian language--Dialects--Russia (Federation)--Tverʹ Region.
Harvard subject headings:
Russian language--Dialects--Phonology.
Russian language--Dialects--Russia (Federation)--Tverskai︠a︡ oblastʹ.
Russian language--Dialects--Russia (Federation)--Tverʹ Region.
Princeton subject headings: