Columbia subject headings:
Architecture--Germany--Berlin--History--20th century--Exhibitions.
Bridges--Design and construction--Germany--Berlin--20th century--Exhibitions.
City planning--Germany--Berlin--Exhibitions.
Harvard subject headings:
Architecture--Germany--Berlin--20th century--Exhibitions.
Bridges--Germany--Berlin--Design and construction--20th century--Exhibitions.
Bridges--Germany--Berlin--Designs and plans.
City planning--Germany--Berlin
City planning--Germany--Berlin--Exhibitions.
Urban beautification--Germany--Berlin.
Princeton subject headings: