Columbia subject headings:
Harvard subject headings:
American literature--20th century--History and criticism
Literature, Modern--20th century--History and criticism
Literature--Study and teaching
Russian literature--Foreign countries--20th century--History and criticism.
Princeton subject headings:
American literature--20th century--History and criticism.
Literature, Modern--20th century--History and criticism.
Literature--Study and teaching.
Russian literature--Foreign countries--20th century--History and criticism.