Columbia subject headings:
Harvard subject headings:
Architecture, Domestic--Europe--History--20th century.
City planning--Europe--History--19th century.
City planning--Europe--History--20th century
Housing--Europe--History--19th century.
Housing--Europe--History--20th century.
Princeton subject headings:
Architecture, Domestic--Europe--History.
City planning--Europe--History.
Housing--Europe--History.