Columbia subject headings:
Harvard subject headings:
Germany--History--Congresses.
Germany--Relations--Italy--Congresses.
Italy--History--Congresses.
Italy--Relations--Germany--Congresses.
Princeton subject headings:
European Union--Congresses.
Fascism--Germany--History--20th century--Congresses.
Fascism--Italy--History--20th century--Congresses.
Germany--Politics and government--20th century--Congresses.
Italy--Politics and government--20th century--Congresses.
Nationalism--Germany--History--20th century--Congresses.
Nationalism--Italy--History--20th century--Congresses.