Columbia subject headings:
Rovigo (Italy : Province)--Kings and rulers.
Rovigo (Italy : Province)--Politics and government.
Rovigo (Italy)--Relations--Italy--Venice.
Venice (Italy)--Relations--Italy--Rovigo.
Harvard subject headings:
Rovigo (Italy : Province)--Kings and rulers.
Rovigo (Italy : Province)--Politics and government.
Rovigo (Italy)--Relations--Italy--Venice.
Venice (Italy)--Relations--Italy--Rovigo.
Princeton subject headings:
Rovigo (Italy : Province)--Kings and rulers.
Rovigo (Italy : Province)--Politics and government.
Rovigo (Italy)--Relations--Italy--Venice.
Venice (Italy)--Relations--Italy--Rovigo.