Columbia subject headings:
Italian drama--20th century--History and criticism--Congresses.
Italian drama--21st century--History and criticism--Congresses.
Theater--Italy--History--20th century--Congresses.
Harvard subject headings:
Italian drama--20th century--History and criticism--Congresses.
Italian drama--21st century--History and criticism--Congresses.
Italian language--20th century--Congresses.
Italian language--21st century--Congresses.
Theater--Italy--History--20th century--Congresses.
Theater--Italy--History--21st century--Congresses.
Princeton subject headings:
Italian drama--20th century--History and criticism--Congresses.
Italian drama--21st century--History and criticism--Congresses.
Italian language--20th century--Congresses.
Italian language--21st century--Congresses.
Theater--Italy--History--20th century--Congresses.
Theater--Italy--History--21st century--Congresses.