Columbia subject headings:
Architecture--Germany--Berlin--History--20th century--Guidebooks.
Architecture--Germany--Berlin--History--21st century--Guidebooks.
Berlin (Germany)--Buildings, structures, etc.--Guidebooks.
Harvard subject headings:
Architecture--Germany--Berlin--21st century.
Architecture--Germany--Berlin--History--20th centur.
Architecture--Germany--Berlin--History--20th century
Architecture--Germany--Berlin--History.
Berlin (Germany)--Buildings, structures, etc.
Princeton subject headings:
Architecture--Germany--Berlin--History--20th century.
Architecture--Germany--Berlin--History--21st century.
Berlin (Germany)--Buildings, structures, etc.