Columbia subject headings:
Germany--Intellectual life--19th century--Congresses.
Germany--Intellectual life--20th century--Congresses.
Harvard subject headings:
Germany--Intellectual life--19th century--Congresses.
Germany--Intellectual life--20th century--Congresses.
Philosophy, German--19th century--Congresses.
Philosophy, German--20th century--Congresses.
Princeton subject headings:
Germany--Intellectual life--19th century--Congresses.
Germany--Intellectual life--20th century--Congresses.