Columbia subject headings:
Council for Mutual Economic Assistance.
East-West trade.
Foreign trade regulation--Europe, Eastern.
Foreign trade regulation--United States.
Harvard subject headings:
Council for Mutual Economic Assistance.
East-West trade.
Foreign trade regulation--Europe, Eastern.
Foreign trade regulation--United States.
Princeton subject headings:
Council for Mutual Economic Assistance.
East-West trade.
Foreign trade regulation--Europe, Eastern.
Foreign trade regulation--United States.