Columbia subject headings:
Harvard subject headings:
Cities and towns--England--History--19th century.
Cities and towns--France--History--19th century.
Cities and towns--Great Britain--History--19th century.
Socialism--France--19th century.
Socialism--Great Britain--19th century.
Socialism--Sociology, Urban.
Socialists--England--History--19th century.
Socialists--France--History--19th century.
Princeton subject headings:
Cities and towns--France--History--19th century.
Cities and towns--Great Britain--History--19th century.
Socialists--France--History--19th century.
Socialists--Great Britain--History--19th century.