Columbia subject headings:
Soviet Union--Ethnic relations.
Soviet Union--History.
Soviet Union--Politics and government.
Soviet Union--Social conditions.
Harvard subject headings:
Dismemberment of nations.
Russia (Federation)--Politics and government.
Soviet Union--Politics and government--1985-1991.
State succession.
Princeton subject headings:
Soviet Union--Ethnic relations.
Soviet Union--History.
Soviet Union--Politics and government.
Soviet Union--Social conditions.