Columbia subject headings:
Nonsense literature, Italian--History and criticism--Congresses.
Nonsense verses, Italian--History and criticism--Congresses.
Harvard subject headings:
Nonsense literature, Italian--History and criticism--Congresses.
Nonsense verses, Italian--History and criticism--Congresses.
Princeton subject headings:
Nonsense literature, Italian--History and criticism--Congresses.
Nonsense verses, Italian--History and criticism--Congresses.