Columbia subject headings:
Harvard subject headings:
Germany--Politics and government--1918-1933
Reichsbanner Schwarz-Rot-Gold (Organization)--History.
Princeton subject headings:
Deutsche Demokratische Partei--History.
Deutsche Zentrumspartei--History.
Germany--History--1918-1933.
Germany--Politics and government--1918-1933.
Sozialdemokratische Partei Deutschlands--History.