Columbia subject headings:
Venice (Italy)--History--697-1508--Sources.
Venice (Italy)--History--To 697--Sources.
Harvard subject headings:
Venice (Italy)--History--697-1508--Sources.
Venice (Italy)--History--Early works to 1800.
Venice (Italy)--History--To 697--Sources.
Princeton subject headings:
Venice (Italy)--History--697-1508--Sources.
Venice (Italy)--History--To 697--Sources.