Columbia subject headings:
Harvard subject headings:
Germany--Intellectual life--19th century--Congresses.
Germany--Intellectual life--20th century--Congresses.
Learning and scholarship--Europe--History--19th century--Congresses.
Learning and scholarship--Germany--History--19th century--Congresses.
Life
Philosophy, Modern--History.
Religion
Princeton subject headings:
Life.
Philosophy, Modern--History.
Religion.