Columbia subject headings:
City planning--France--History--20th century.
City planning--Italy--History--20th century.
France--Relations--Italy.
Italy--Relations--France.
Harvard subject headings:
City planning--France--History--20th century
City planning--Italy--History--20th century
France--Relations--Italy.
Italy--Relations--France.
Princeton subject headings:
City planning--France--History--20th century.
City planning--Italy--History--20th century.
France--Relations--Italy.
Italy--Relations--France.