Columbia subject headings:
Harvard subject headings:
Cities and towns--Europe--History
City planning--Europe--History
Urbanization--Europe--History
Princeton subject headings:
Europe--Civilization--19th century.
Europe--Civilization--20th century.
Metropolitan areas--Europe--History--19th century.
Metropolitan areas--Europe--History--20th century.
Urbanization--Europe--History--19th century.
Urbanization--Europe--History--20th century.