Columbia subject headings:
Harvard subject headings:
France--Intellectual life--20th century--Congresses.
France--Relations--Germany--Congresses.
Germany--Intellectual life--20th century--Congresses.
Germany--Relations--France--Congresses.
Princeton subject headings:
France--Intellectual life--20th century--Congresses.
France--Relations--Germany--Congresses.
Germany--Intellectual life--20th century--Congresses.
Germany--Relations--France--Congresses.