Columbia subject headings:
Harvard subject headings:
Labor movement--Germany--History--20th century
Socialism and youth--Germany--History--20th century.
Youth movements--Germany--History--20th century.
Youth--Political activity--Germany--History--20th century
Princeton subject headings:
Labor movement--Germany--History--20th century.
Socialism and youth--Germany--History--20th century.
Youth movements--Germany--History--20th century.
Youth--Political activity--Germany--History--20th century.