Columbia subject headings:
Russia (Federation)--Civilization--Encyclopedias.
Russia--Civilization--Encyclopedias.
Soviet Union--Civilization--Encyclopedias.
Harvard subject headings:
Russia (Federation)--Civilization--Encyclopedias.
Russia--Civilization--Encyclopedias.
Soviet Union--Civilization--Encyclopedias.
Princeton subject headings:
Encyclopedias.
Russia (Federation)--Civilization--Encyclopedias.