Columbia subject headings:
German literature--20th century--History and criticism--Congresses.
Germany--In literature--Congresses.
Italian literature--20th century--History and criticism--Congresses.
Italy--In literature--Congresses.
Harvard subject headings:
German literature--20th century--History and criticism--Congresses
Germany--In literature--Congresses.
Italian literature--20th century--History and criticism--Congresses
Italy--In literature--Congresses.
Princeton subject headings:
German literature--20th century--History and criticism--Congresses.
Germany--In literature--Congresses.
Italian literature--20th century--History and criticism--Congresses.
Italy--In literature--Congresses.