Columbia subject headings:
Harvard subject headings:
Council for Mutual Economic Assistance.
Europe, Eastern--Commerce--Soviet Union.
Europe, Eastern--Economic integration.
Europe, Eastern--Foreign economic relations--Soviet Union.
Soviet Union--Commerce--Europe, Eastern.
Soviet Union--Foreign economic relations--Europe, Eastern.
Princeton subject headings:
Council for Mutual Economic Assistance.
Soviet Union--Foreign economic relations--Communist countries.
Soviet Union--Foreign economic relations--Europe, Eastern.