Columbia subject headings:
Harvard subject headings:
International Union of Socialist Youth--History.
International Union of Socialist Youth.
Socialism and youth--History.
Socialism--History
Solidarity--Political aspects.
Student movements--Germany--History--20th century.
Youth movements--Germany--History--20th century.
Youth movements--History.
Princeton subject headings:
International Union of Socialist Youth.
Socialism--History.
Solidarity--Political aspects.
Student movements--Germany--History--20th century.
Youth movements--Germany--History--20th century.