Columbia subject headings:
Nineteen sixty-eight, A.D.--Congresses.
Protest movements--History--20th century--Congresses.
Student movements--History--20th century--Congresses.
World politics--1965-1975.
Youth--Political activity--History--20th century--Congresses.
Harvard subject headings:
Protest movements--History.
Princeton subject headings:
Nineteen sixty-eight, A.D.--Congresses.
Protest movements--History--20th century--Congresses.
Student movements--History--20th century--Congresses.
World politics--1965-1975.
Youth--Political activity--History--20th century--Congresses.