Columbia subject headings:
D'Annunzio, Gabriele, 1863-1938--Dramatic works--Congresses.
Harvard subject headings:
D'Annunzio, Gabriele, 1863-1938--Dramatic works--Congresses.
Princeton subject headings:
D'Annunzio, Gabriele, 1863-1938--Dramatic works--Congresses.