Columbia subject headings:
Harvard subject headings:
Agricultural laborers--Argentina
Agricultural laborers--Argentina--Political activity.
Agricultural laborers--Latin America--Political activity.
Agricultural laborers--Latin America.
Peasants--Argentina--Political activity.
Peasants--Argentina.
Peasants--Latin America
Peasants--Latin America--Political activity.
Princeton subject headings:
Agricultural laborers--Argentina--Political activity.
Agricultural laborers--Argentina.
Peasants--Argentina--Political activity.
Peasants--Argentina.