Columbia subject headings:
Russian language--1300-1700--Grammar, Historical.
Russian language--Grammar, Historical.
Russian language--To 1300--Grammar, Historical.
Harvard subject headings:
Russian language--1300-1700--History.
Russian language--18th century--History.
Russian language--To 1300--Grammar, Historical.
Russian language--To 1300--History.
Princeton subject headings:
Russian language--1300-1700--Grammar, Historical.
Russian language--18th century--Grammar, Historical.
Russian language--To 1300--Grammar, Historical.