Columbia subject headings:
Bell towers--Italy--Venice--History.
Campanile di San Marco (Venice, Italy)
Venice (Italy)--Buildings, structures, etc.
Harvard subject headings:
Bell towers--Italy--Venice--History.
Campanile di San Marco (Venice, Italy)
Venice (Italy)--Buildings, structures, etc.
Princeton subject headings:
Bell towers--Italy--Venice--History.
Campanile di San Marco (Venice, Italy)
Venice (Italy)--Buildings, structures, etc.