Columbia subject headings:
Harvard subject headings:
Italian language--History--Congresses.
Italian language--Switzerland--History--Congresses.
Italian literature--History and criticism--Congresses
Italian literature--Study and teaching--Congresses.
Italian literature--Switzerland--History and criticism--Congresses.
Princeton subject headings:
Italian language--History--Congresses.
Italian language--Switzerland--History--Congresses.
Italian literature--History and criticism--Congresses.
Italian literature--Study and teaching--Congresses.
Italian literature--Switzerland--History and criticism--Congresses.