Columbia subject headings:
Fortification, Field.
Fortification--Italy--Veneto--History--20h century.
Veneto (Italy)--History, Military.
World War, 1918-1918--Italy--Veneto.
Harvard subject headings:
Fortification, Field
Fortification--Italy--Veneto--History--20h century.
Veneto (Italy)--History, Military.
World War, 1914-1918--Italy--Veneto.
Princeton subject headings: