Columbia subject headings:
Harvard subject headings:
Cities and towns--Growth--History--20th century.
Land use--Germany--History--20th century.
Regional planning--Germany--History--20th century.
Social integration--Germany--History--20th century.
Princeton subject headings:
Cities and towns--Growth--History--20th century.
Land use--Germany--History--20th century.
Regional planning--Germany--History--20th century.
Social integration--Germany--History--20th century.