Columbia subject headings:
Authors, Russian--20th century--Biography.
Authors, Russian--20th century--Correspondence.
Kli︠u︡ev, Nikolaĭ, 1884-1937.
Harvard subject headings:
Kli︠u︡ev, Nikolaĭ, 1884-1937--Correspondence.
Kli︠u︡ev, Nikolaĭ, 1884-1937--Prose.
Poets, Russian--20th century--Correspondence
Princeton subject headings: