Columbia subject headings:
National characteristics, American--History.
National characteristics, Russian--History.
Soviet Union--Economic conditions.
United States--Economic conditions.
Harvard subject headings:
National characteristics, American--History
National characteristics, Russian--History.
Soviet Union--Economic conditions.
United States--Economic conditions.
Princeton subject headings:
National characteristics, American--History.
National characteristics, Russian--History.
Soviet Union--Economic conditions.
United States--Economic conditions.