Columbia subject headings:
Architecture--France--Paris--History--19th century.
Europe--Civilization--19th century.
Paris (France)--Social life and customs--19th century.
Harvard subject headings:
Architecture, Modern--19th century--France--Paris.
Europe--Civilization--19th century.
Paris (France)--Social life and customs--19th century.
Princeton subject headings:
Architecture, Modern--19th century--France--Paris.
Europe--Civilization--19th century.
Paris (France)--Social life and customs--19th century.