Columbia subject headings:
Argentina--Politics and government--1955-1983.
Labor unions--Argentina--History--20th century.
Syndicalism--Argentina--History--20th century.
Harvard subject headings:
Argentina--Politics and government--1955-1983.
Labor unions--Argentina
Labor unions--Argentina--History--20th century
Labor unions--Argentina--Political activity.
Syndicalism--Argentina--History--20th century.
Syndicalism--Argentina.
Princeton subject headings: