Columbia subject headings:
Harvard subject headings:
Conferenza di Portorose (1921)
Europe, Central--Commerce--Italy--Congresses.
Europe, Central--Foreign relations--Italy--Congresses.
Italy--Commerce--Europe, Central--Congresses.
Italy--Foreign relations--Europe, Central--Congresses.
Princeton subject headings:
Conferenza di Portorose (1921)
Europe, Central--Commerce--Italy--Congresses.
Europe, Central--Foreign relations--Italy--Congresses.
Italy--Commerce--Europe, Central--Congresses.
Italy--Foreign relations--Europe, Central--Congresses.