Columbia subject headings:
Criticism--Italy--History--20th century--Congresses.
Italian literature--History and criticism--Congresses.
Sansone, Mario--Congresses.
Harvard subject headings:
Criticism--Italy--History--20th century--Congresses.
Italian literature--History and criticism--Congresses
Sansone, Mario--Congresses.
Princeton subject headings:
Sansone, Mario--Congresses.