Columbia subject headings:
Harvard subject headings:
Germany--Foreign relations--1945---Congresses.
Germany--Politics and government--1945-1990--Congresses.
Germany--Politics and government--1990---Congresses.
Sozialdemokratische Partei Deutschlands--Congresses.
Princeton subject headings:
Germany--Foreign relations--1945---Congresses.
Germany--Politics and government--1945-1990--Congresses.
Germany--Politics and government--1990---Congresses.
Sozialdemokratische Partei Deutschlands--Congresses.