Columbia subject headings:
Italy--History--1922-1945.
Italy. Marina--History--World War, 1939-1945.
World War, 1939-1945--Naval operations, Italian.
Harvard subject headings:
Italy--History--1922-1945.
Italy. Marina--History--World War, 1939-1945.
World War, 1939-1945--Naval operations, Italian.
Princeton subject headings:
Italy. Marina--History--World War, 1939-1945.
World War, 1939-1945--Naval operations, Italian.