Columbia subject headings:
Censorship--Spain--History--20th century.
Spanish literature--Censorship--History--20th century.
Harvard subject headings:
Censorship--Spain--History--20th century--Congresses.
Spanish literature--Censorship--History--20th century--Congresses.
Princeton subject headings:
Basque literature--Censorship--Spain--History--20th century.
Censorship--Spain--History--20th century.
Fascism and literature--Spain--History--20th century.
Spanish literature--Censorship--History--20th century.