Columbia subject headings:
City planning--France--History--19th century.
City planning--France--History--20th century.
City planning--Italy--History--19th century.
City planning--Italy--History--20th century.
Zoning--France--History--19th century.
Zoning--France--History--20th century.
Zoning--Italy--History--19th century.
Zoning--Italy--History--20th century.
Harvard subject headings:
City planning--France--History--19th century.
City planning--France--History--20th century
City planning--Italy--History--19th century.
City planning--Italy--History--20th century
Zoning--France--History--19th century.
Zoning--France--History--20th century.
Zoning--Italy--History--19th century.
Zoning--Italy--History--20th century.
Princeton subject headings:
City planning--France--History--19th century.
City planning--France--History--20th century.
City planning--Italy--History--19th century.
City planning--Italy--History--20th century.
Zoning--France--History--19th century.
Zoning--France--History--20th century.
Zoning--Italy--History--19th century.
Zoning--Italy--History--20th century.