Columbia subject headings:
City planning--France--Paris--History--19th century.
Haussmann, Georges Eugène, baron, 1809-1891.
Harvard subject headings:
City planning--France--Paris--History--19th century--Congresses.
Urbanization--France--Paris--History--19th century--Congresses.
Princeton subject headings:
City planning--France--Paris--History--19th century--Congresses.
Urbanization--France--Paris--History--19th century--Congresses.