Columbia subject headings:
Architecture and state--Germany (East)--History--Congresses.
Architecture--Germany (East)--History.
City planning--Germany (East)--History.
Harvard subject headings:
Architecture and state--Germany (East)--History--Congresses.
Architecture--Germany (East)--History.
City planning--Germany (East)--History.
Princeton subject headings:
Architecture and state--Germany (East)--History--Congresses.
Architecture--Germany (East)--History--Congresses.
City planning--Germany (East)--History--Congresses.