Columbia subject headings:
Europe--Relations--Russia.
Europe--Relations--Soviet Union.
Philosophy, Russian--19th century.
Philosophy, Russian--20th century.
Russia--Relations--Europe.
Soviet Union--Relations--Europe.
Harvard subject headings:
Europe--Relations--Russia.
Europe--Relations--Soviet Union.
Philosophy, Russian--19th century.
Philosophy, Russian--20th century.
Russia--Relations--Europe.
Soviet Union--Relations--Europe.
Princeton subject headings:
Europe--Relations--Russia.
Philosophy, Russian--19th century.
Philosophy, Russian--20th century.
Russia--Intellectual life--1801-1917.
Russia--Intellectual life.
Russia--Relations--Europe.
Russia--Relations--Western countries.
Western countries--Relations--Russia.