Columbia subject headings:
Communism--Germany--History.
Kommunistische Partei Deutschlands--History.
Political science--Germany--History.
Thalheimer, August.
Harvard subject headings:
Communism--Germany--History
Kommunistische Partei Deutschlands--History.
Political science--Germany--History
Thalheimer, August.
Princeton subject headings:
Materialism.
Socialism.
Thalheimer, August.