Columbia subject headings:
Europe--Civilization--Congresses.
Europe--In literature--Congresses.
European federation--Congresses.
German literature--History and criticism--Congresses.
Philosophy, European--20th century--Congresses.
Harvard subject headings:
Europe--Civilization--Congresses
Europe--In literature--Congresses.
European federation--Congresses
German literature--History and criticism--Congresses
Philosophy, European--20th century--Congresses.
Princeton subject headings:
Europe--Civilization--Congresses.
Europe--In literature--Congresses.
European federation--Congresses.
German literature--History and criticism--Congresses.
Philosophy, European--20th century--Congresses.