Columbia subject headings:
Communism--Germany--History.
Kommunistische Partei Deutschlands--History.
Spartakusbund (Germany)--History.
Harvard subject headings:
Communism--Germany--History
Kommunistische Partei Deutschlands--History.
Spartakusbund (Germany)--History.
Princeton subject headings:
Communism--Germany--History.
Kommunistische Partei Deutschlands--History.
Spartakusbund (Germany)--History.