Columbia subject headings:
Harvard subject headings:
Communism--Germany--History--20th century
Communists--Germany--20th century--Biography.
Communists--Germany--Biography
Kommunistische Partei Deutschlands--History.
Socialism--Germany--20th century.
Socialism--Germany--History--20th century
Thälmann, Ernst, 1886-1944
Princeton subject headings:
Communists--Germany--20th century--Biography.
Kommunistische Partei Deutschlands--Biography.
Thälmann, Ernst, 1886-1944.