Columbia subject headings:
Harvard subject headings:
Italy--Foreign relations--1922-1945.
Italy--Foreign relations--Switzerland.
Italy--Relations--Switzerland.
Switzerland--Foreign relations--Italy.
Switzerland--Relations--Italy.
World War, 1939-1945--Underground movements--Switzerland.
Princeton subject headings:
Italy--History--1922-1945--Congresses.
Italy--Relations--Switzerland--Congresses.
Switzerland--History--20th century--Congresses.
Switzerland--Relations--Italy--Congresses.
World War, 1939-1945--Undergroung movements--Italy--Sources--Congresses.