Columbia subject headings:
Architecture--Environmental aspects--Italy, Central.
Landscape architecture--Italy, Central.
Landscapes--Italy, Central--History.
Harvard subject headings:
Architecture--Environmental aspects--Italy, Central.
Landscape architecture--Italy, Central.
Landscapes--Italy, Central--History.
Princeton subject headings:
Architecture--Environmental aspects--Italy, Central.
Landscape architecture--Italy, Central.
Landscapes--Italy, Central--History.