Columbia subject headings:
Literature--Aesthetics.
Russian literature--19th century--History and criticism.
Russian literature--20th century--History and criticism.
Russian literature--History and criticism--Theory, etc.
Harvard subject headings:
Literature--Aesthetics
Russian literature--19th century--History and criticism
Russian literature--20th century--History and criticism
Russian literature--History and criticism--Theory, etc.
Princeton subject headings:
Literature--Aesthetics.
Literature--Philosophy.