Columbia subject headings:
Labor movement--Caribbean Area.
Labor movement--Latin America.
Labor unions--Caribbean Area.
Labor unions--Latin America.
Political sociology.
Harvard subject headings:
Labor movement--Caribbean Area.
Labor movement--Latin America
Labor unions--Caribbean Area.
Labor unions--Latin America
Political sociology.
Princeton subject headings:
Labor movement--Caribbean Area.
Labor movement--Latin America.
Labor unions--Caribbean Area--Political activity.
Labor unions--Caribbean Area.
Labor unions--Latin America--Political activity.
Labor unions--Latin America.