Columbia subject headings:
Harvard subject headings:
Economic development--Europe--History.
Economic development--Russia--History.
Economic development--Soviet Union--History.
Europe--Economic conditions.
Russia--Economic conditions.
Soviet Union--Economic conditions.
Princeton subject headings:
Economic development--Europe--History.
Economic development--Russia--History.
Economic development--Soviet Union--History.
Europe--Economic conditions.
Russia--Economic conditions.
Soviet Union--Economic conditions.