Columbia subject headings:
Russian language--Style.
Russian poetry--19th century--History and criticism.
Russian poetry--20th century--History and criticism.
Harvard subject headings:
Russian language--Style.
Russian poetry--19th century--History and criticism
Russian poetry--20th century--History and criticism
Princeton subject headings:
Russian language--Style.
Russian poetry--19th century--History and criticism.
Russian poetry--20th century--History and criticism.