Columbia subject headings:
Gardens--Italy--Romagna.
Landscapes--Italy--Romagna.
Parks--Italy--Romagna.
Romagna (Italy)--Description and travel.
Harvard subject headings:
Gardens--Italy--Romagna.
Landscapes--Italy--Romagna.
Parks--Italy--Romagna.
Romagna (Italy)--Description and travel.
Princeton subject headings:
Gardens--Italy--Romagna.
Landscapes--Italy--Romagna.
Parks--Italy--Romagna.
Romagna (Italy)--Description and travel.