Columbia subject headings:
Architecture--Germany--History--20th century.
Architecture--Germany--History--21st century.
Büro für Städtebau.
Cities and towns--Germany.
City planners--Germany.
City planning--Germany--History--20th century.
Machleidt, Hildebrand.
Harvard subject headings:
Architecture--Germany--21st century.
Architecture--Germany--History--20th century
Büro für Städtebau.
Cities and towns--Germany.
City planners--Germany.
City planning--Germany--History--20th century.
Machleidt, Hildebrand.
Princeton subject headings: