Columbia subject headings:
Harvard subject headings:
Freideutsche Jugend--History--Sources.
Freideutsche Jugend--History.
Youth movements--Germany--History--20th century--Sources.
Youth movements--Germany--History--20th century.
Youth--Political activity--Germany--History--20th century
Youth--Political activity--Germany--History--20th century--Sources.
Princeton subject headings:
Freideutsche Jugend--History--Sources.
Freideutsche Jugend--History.
Youth movements--Germany--History--20th century--Sources.
Youth movements--Germany--History--20th century.
Youth--Political activity--Germany--History--20th century--Sources.
Youth--Political activity--Germany--History--20th century.