Columbia subject headings:
Harvard subject headings:
Germany (West)--History--20th century--Congresses.
Germany (West)--Politics and government--20th century--Congresses.
Germany--History--20th century--Congresses.
Klönne, Arno--Congresses.
Princeton subject headings:
Germany (West)--History--20th century--Congresses.
Germany (West)--Politics and government--20th century--Congresses.
Germany--History--20th century--Congresses.
Klönne, Arno--Congresses.