Columbia subject headings:
Communism--Germany (East)--History.
Sozialistische Einheitspartei Deutschlands--History.
Harvard subject headings:
Communism--Germany (East)
Communist parties--Germany (East)
Germany (East)--Politics and government.
Socialism--Germany (East)
Sozialistische Einheitspartei Deutschlands--History.
Princeton subject headings:
Communism--Germany (East)--History.
Sozialistische Einheitspartei Deutschlands--History.