Columbia subject headings:
Harvard subject headings:
Counterculture--Switzerland--Zurich--History.
Hippies--Switzerland--Zurich--Social life and customs.
Nineteen sixty-seven, A.D.--Social aspects--Switzerland--Zurich.
Protest movements--Switzerland--Zurich--History--20th century.
Youth movements--Switzerland--Zurich--History--20th century.
Princeton subject headings:
Nineteen sixty-seven, A.D.
Popular culture--Switzerland--Zurich--History--20th century.
Rock music--1961-1970--History and criticism.
Zurich (Switzerland)--History--20th century.