Columbia subject headings:
Paris (France)--Social conditions--19th century.
Railroad stations--France--Paris--History--19th century.
Railroads--France--Paris--History--19th century.
Sociology, Urban--France--Paris--History--19th century.
Harvard subject headings:
Paris (France)--Social conditions--19th century.
Railroad stations--France--Paris--History--19th century.
Railroad stations--Social aspects--France--Paris--History--19th century.
Princeton subject headings:
Paris (France)--Social conditions--19th century.
Railroad stations--France--Paris--History--19th century.
Railroad stations--Social aspects--France--Paris--History--19th century.