Columbia subject headings:
Harvard subject headings:
Central planning--Germany (East)--History.
Economic development--Germany (East)--Forecasting--History.
Germany (East)--Economic policy
Socialism--Germany (East)--History
Princeton subject headings:
Central planning--Germany (East)--History.
Economic development--Germany (East)--Forecasting--History.
Germany (East)--Economic policy--20th century.
Socialism--Germany (East)