Columbia subject headings:
East-West trade.
Economic sanctions, American--Soviet Union--History--20th century.
Soviet Union--Foreign economic relations--United States.
United States--Foreign economic relations--Soviet Union.
Harvard subject headings:
East-West trade.
Economic sanctions, American--Soviet Union--History--20th century.
Soviet Union--Foreign economic relations--United States.
United States--Foreign economic relations--Soviet Union.
Princeton subject headings:
East-West trade.
Economic sanctions, American--Soviet Union--History--20th century.
Soviet Union--Foreign economic relations--United States.
United States--Foreign economic relations--Soviet Union.