Columbia subject headings:
Harvard subject headings:
Anti-Nazi movement--Germany--Cologne--History.
Edelweisspiraten (Resistance groups)--Biography.
Ritzer, Wolfgang, 1925-2010.
Youth--Political activity--Germany--History--20th century
Princeton subject headings:
Anti-Nazi movement--Germany--Cologne--History.
Edelweisspiraten (Resistance groups)--Biography.
Ritzer, Wolfgang, 1925-2010.
Youth--Political activity--Germany--History--20th century.