Columbia subject headings:
Harvard subject headings:
Floods--Italy--Po River--Pictorial works.
Floods--Italy--Rovigo (Province)--Pictorial works.
Rovigo (Italy : Province)--Pictorial works.
Princeton subject headings:
Floods--Italy--Po River--Pictorial works.
Floods--Italy--Rovigo (Province)--Pictorial works.
Rovigo (Italy : Province)--Pictorial works.