Columbia subject headings:
Anti-Nazi movement--Germany.
Communists--Germany.
Knöchel, Wilhelm, 1899-1944.
Harvard subject headings:
Anti-Nazi movement--Germany
Communists--Germany.
Knöchel, Wilhelm, 1899-1944.
Princeton subject headings:
Anti-Nazi movement.
Communism--Germany--History--Sources.
Knöchel, Wilhelm, 1899-1944.
Kommunistische Partei Deutschlands.