Columbia subject headings:
Harvard subject headings:
Counterculture--Spain--Madrid--History--20th century--Congresses.
Madrid (Spain)--Intellectual life--20th century--Congresses.
Madrid (Spain)--Social life and customs--20th century--Congresses.
Popular culture--Spain--Madrid--History--20th century--Congresses.
Princeton subject headings:
Counterculture--Spain--Madrid--History--20th century--Congresses.
Madrid (Spain)--Intellectual life--20th century--Congresses.
Madrid (Spain)--Social life and customs--20th century--Congresses.
Popular culture--Spain--Madrid--History--20th century--Congresses.