Columbia subject headings:
Arno River Region (Italy)--History.
Art, Italian--Italy--Arno River Region.
Harvard subject headings:
Arno River Valley (Italy)--History.
Arno River Valley (Italy)--Pictorial works.
Floods--Italy--History.
Princeton subject headings:
Arno River Region (Italy)--History.
Art, Italian--Italy--Arno River Region.