Columbia subject headings:
Russia--Civilization--1801-1917.
Russia--Intellectual life--1801-1917.
Harvard subject headings:
Decembrists.
Philosophy, Russian--History--19th century.
Russia--Civilization--1801-1917.
Russia--Intellectual life--1801-1917.
Princeton subject headings:
Russia--Civilization--1801-1917.
Russia--Intellectual life--1801-1917.