Columbia subject headings:
Poor--France--Paris--History.
Public health--France--Paris--History.
Public housing--France--Paris--History.
Harvard subject headings:
Poor--France--Paris--History.
Public health--France--Paris--History.
Public housing--France--Paris--History.
Princeton subject headings:
Poor--France--Paris--History.
Public health--France--Paris--History.
Public housing--France--Paris--History.