Columbia subject headings:
Communism--Germany--History.
Kommunistische Partei Deutschlands--History.
Leninbund.
Right and left (Political science)
Working class--Germany--History.
Harvard subject headings:
Communism--Germany--History
Kommunistische Partei Deutschlands--History.
Leninbund.
Right and left (Political science)
Working class--Germany--History.
Princeton subject headings:
Communism--Germany--History.
Kommunistische Partei Deutschlands--History.
Labor movement--Germany--History.
Leninbund.
Right and left (Political science)