Columbia subject headings:
Belarusian language--Grammar, Comparative--Russian.
Belarusian language--Morphology.
Russian language--Grammar, Comparative--Belarusian.
Russian language--Morphology.
Harvard subject headings:
Belarusian language--Grammar, Comparative--Russian.
Belarusian language--Morphology.
Russian language--Grammar, Comparative--Byelorussian.
Russian language--Morphology.
Princeton subject headings:
Belarusian language--Grammar, Comparative.
Grammar, Comparative and general--Morphology.
Russian language--Grammar, Comparative.
Slavic languages--Grammar, Comparative.