Columbia subject headings:
Germany--Intellectual life--Congresses.
Germany--Politics and government--1918-1933--Congresses.
Harvard subject headings:
Culture--Philosophy--Congresses
Germany--Politics and government--Congresses.
Germany--Social life and customs--20th century--Congresses.
Politics and culture--Germany--Congresses.
Religion and state--Germany--Congresses.
Princeton subject headings:
Germany--Intellectual life--Congresses.
Germany--Politics and government--1918-1933--Congresses.