Columbia subject headings:
Architecture--Germany--Berlin--History--19th century.
Architecture--Germany--Berlin--History--20th century.
Berlin (Germany)--Buildings, structures, etc.
Post office buildings--Germany--Berlin.
Harvard subject headings:
Architecture, Modern--19th century--Germany--Berlin.
Architecture, Modern--20th century--Germany--Berlin.
Architecture--Germany--Berlin--History.
Berlin (Germany)--Buildings, structures, etc.
Post office buildings--Germany--Berlin.
Princeton subject headings:
Architecture, Modern--19th century--Germany--Berlin.
Architecture, Modern--20th century--Germany--Berlin.
Berlin (Germany)--Buildings, structures, etc.
Post office buildings--Germany--Berlin.