Columbia subject headings:
Germany--Civilization--20th century--Congresses.
Germany--Intellectual life--20th century--Congresses.
Germany--Politics and government--1918-1933--Congresses.
Harvard subject headings:
Germany--Politics and government--1918-1933--Congresses.
Political culture--Germany--History--20th century--Congresses.
Princeton subject headings:
Germany--Civilization--20th century--Congresses.
Germany--Intellectual life--20th century--Congresses.
Germany--Politics and government--1918-1933--Congresses.