Columbia subject headings:
Argentina--Politics and government--20th century.
Ramos, Jorge Abelardo.
Socialism--Argentina--History--20th century.
Harvard subject headings:
Argentina--Politics and government--20th century.
Ramos, Jorge Abelardo.
Socialism--Argentina--20th century.
Princeton subject headings:
Argentina--Politics and government--20th century.
Ramos, Jorge Abelardo.
Socialism--Argentina--History--20th century.