Columbia subject headings:
Argentina--History--20th century.
López Echagüe, Hernán, 1956-
Student movements--Argentina--Buenos Aires--History--20th century.
Harvard subject headings:
Argentina--History--20th century.
López Echagüe, Hernán, 1956-
Student movements--Argentina--Buenos Aires--History--20th century.
Princeton subject headings:
Argentina--History--20th century.
López Echagüe, Hernán, 1956-
Student movements--Argentina--Buenos Aires--History--20th century.