Columbia subject headings:
Harvard subject headings:
Germany (East)--Economic conditions.
Germany--History--Unification, 1990.
Poland--Economic conditions--1990-
Regional planning--Germany (East)
Regional planning--Poland.
Princeton subject headings:
Germany (East)--Economic conditions.
Germany--History--Unification, 1990.
Poland--Economic conditions--1990-
Regional planning--Germany (East)
Regional planning--Poland.