Columbia subject headings:
Harvard subject headings:
Germany--Politics and government--1945-1990.
Germany--Politics and government--1990-
Socialism--Germany
Sozialdemokratische Partei Deutschlands--History.
Princeton subject headings:
Germany--Politics and government--1945-1990.
Germany--Politics and government--1990-
Socialism--Germany.
Sozialdemokratische Partei Deutschlands--History.