Columbia subject headings:
Harvard subject headings:
Higher education and state--Mexico--History--20th century--Congresses.
Student movements--Mexico--Mexico City--History--20th century--Congresses.
Universidad Nacional Autónoma de México--Students--Political activity--History--20th century--Congresses.
Princeton subject headings:
Barros Sierra, Javier, 1915-1971.
Mexico--Politics and government--1946-1970.
Nineteen sixty-eight, A.D.
Political participation--Mexico--History--20th century.
Protest movements--Mexico--History--20th century.
Student movements--Mexico--Mexico City--History--20th century.