Columbia subject headings:
Intellectuals--Russia--History--19th century.
Intellectuals--Russia--History--20th century.
Russia--Intellectual life--1801-1917.
Harvard subject headings:
Intellectuals--Europe--History.
Intellectuals--Russia--History.
Intellectuals.
Princeton subject headings:
Intellectuals--Russia--History--19th century.
Intellectuals--Russia--History--20th century.
Russia--Intellectual life--1801-1917.