Columbia subject headings:
Harvard subject headings:
Organización de Pioneros "José Martí"--Anniversaries, etc.
Socialism and youth--Cuba--Congresses.
Youth--Cuba--Political activity--Congresses.
Youth--Cuba--Societies and clubs--Anniversaries, etc.
Youth--Political activity--Cuba--Congresses.
Princeton subject headings:
Organización de Pioneros "José Martí"--Anniversaries, etc.
Socialism and youth--Cuba.