Columbia subject headings:
Europe--Intellectual life--19th century.
Herzen, Aleksandr, 1812-1870.
Russia--Intellectual life--1801-1917.
Harvard subject headings:
Europe--Intellectual life--19th century.
Herzen, Aleksandr, 1812-1870.
Russia--Intellectual life--1801-1917.
Princeton subject headings:
Herzen, Aleksandr, 1812-1870.