Columbia subject headings:
Harvard subject headings:
Białystok (Poland : Voivodeship)--Languages--History.
Names, Geographical--Poland
Onomastics--Poland.
Suwałki (Poland : Voivodeship)--Languages--History.
Princeton subject headings:
Historical linguistics--Poland--Białystok.
Onomastics--Poland--Białystok.
Slavic languages--History--Poland--Białystok.