Columbia subject headings:
Harvard subject headings:
Germany (East)--Politics and government.
Political participation--Germany (East)--History.
Political parties--Germany (East)--History.
Sozialdemokratische Partei Deutschlands--History.
Princeton subject headings:
Germany (East)--Politics and government.
Political participation--Germany (East)--History.
Political parties--Germany (East)--History.
Sozialdemokratische Partei Deutschlands--History.