Columbia subject headings:
Harvard subject headings:
Germany (East)--Economic policy.
Germany--Economic policy--20th century.
Political planning--Germany (East)--History.
Political planning--Germany--History--20th century.
Princeton subject headings:
Germany (East)--Economic policy.
Germany--Economic policy--20th century.
Political planning--Germany (East)--History.
Political planning--Germany--History--20th century.