Columbia subject headings:
Indians, Treatment of--Latin America.
Indians--Employment--History.
Working class--Latin America.
Harvard subject headings:
Indians of North America--Employment.
Indians of South America.
Indians, Treatment of--Latin America.
Indians--Employment--History.
Labor--Latin America.
Working class--Latin America.
Princeton subject headings:
Indians, Treatment of--Latin America.
Indians--Employment--History.
Labor--Latin America.
Working class--Latin America.