Columbia subject headings:
Labor unions--Argentina--History--20th century.
Peronism.
Syndicalism--Argentina--History--20th century.
Harvard subject headings:
Labor unions--Argentina--History--20th century
Peronism.
Syndicalism--Argentina--History--20th century.
Princeton subject headings:
Argentina--Politics and government--1943-
Labor movement--Argentina.
Labor unions--Argentina--Political activity.
Peronism.
Syndicalism--Argentina.