Columbia subject headings:
Europe, Eastern--Economic policy.
Europe, Eastern--Social policy.
Harvard subject headings:
Europe, Eastern--Economic conditions--1945-1989--Encyclopedias.
Europe, Eastern--Politics and government--1945-1989--Encyclopedias.
Soviet Union--Economic conditions--Encyclopedias.
Soviet Union--Politics and government--1945-1991--Encyclopedias.
Princeton subject headings: