Columbia subject headings:
Belarusian language--Grammar, Comparative--Russian.
Languages in contact.
Russian language--Belarus.
Russian language--Grammar, Comparative--Belarusian.
Russian language--Grammar, Comparative--Ukrainian.
Russian language--Ukraine.
Ukrainian language--Grammar, Comparative--Russian.
Harvard subject headings:
Belarusian language.--Grammar, Comparative--Russian.
Languages in contact.
Russian language--Belarus.
Russian language--Grammar, Comparative--Byelorussian.
Russian language--Grammar, Comparative--Ukrainian.
Russian language--Ukraine.
Ukrainian language--Grammar, Comparative--Russian.
Princeton subject headings:
Belarusian language--Grammar, Comparative--Russian.
Languages in contact.
Russian language--Belarus.
Russian language--Grammar, Comparative--Belarusian.
Russian language--Grammar, Comparative--Ukrainian.
Russian language--Ukraine.
Ukrainian language--Grammar, Comparative--Russian.