Columbia subject headings:
Architecture--Competitions--Germany--Berlin--Exhibitions.
Architecture--Germany--Berlin--History--20th century--Exhibitions.
Berlin (Germany)--Buildings, structures, etc.--Exhibitions.
Hochhaus am Bahnhof Friedrichstrasse (Berlin, Germany)--Exhibitions.
Skyscrapers--Germany--Berlin--Exhibitions.
Harvard subject headings:
Architecture, Modern--20th century--Germany--Berlin--Designs and plans--Exhibitions.
Architecture, Modern--20th century--Germany--Berlin--Exhibitions.
Architecture--Competitions--Germany--Berlin--Exhibitions.
Architecture--Competitions--Germany--Berlin--History--20th century--Exhibitions.
Berlin (Germany)--Buildings, structures, etc.--Designs and plans--Exhibitions.
Berlin (Germany)--Buildings, structures, etc.--Exhibitions.
Hochhaus am Bahnhof Friedrichstrasse (Berlin, Germany)--Exhibitions.
Skyscrapers--Germany--Berlin--Designs and plans--Exhibitions.
Skyscrapers--Germany--Berlin--Exhibitions.
Princeton subject headings:
Architecture, Modern--20th century--Germany--Berlin--Exhibitions.
Architecture--Competitions--Germany--Berlin--Exhibitions.
Berlin (Germany)--Buildings, structures, etc.--Exhibitions.
Hochhaus am Bahnhof Friedrichstrasse (Berlin, Germany)--Exhibitions.
Skyscrapers--Germany--Berlin--Exhibitions.