Columbia subject headings:
Coast defenses--Italy--Venice--History--20th century.
Venice (Italy)--Defenses--History--20th century.
Venice (Italy)--History, Military--20th century.
Harvard subject headings:
Coast defences--Italy--Venice--History--20th century.
Venice (Italy)--Defences--History--20th century.
Venice (Italy)--History, Military--20th century.
Princeton subject headings: