Columbia subject headings:
Book burning--Spain--History--20th century.
Books and reading--Spain--History--20th century.
Censorship--Spain--History--20th century.
Prohibited books--Spain--History--20th century.
Harvard subject headings:
Book burning--Spain--History--20th century.
Books and reading--Spain--History--20th century.
Censorship--Spain--History--20th century.
Prohibited books--Spain--History--20th century.
Princeton subject headings:
Book burning--Spain--History--20th century.
Books and reading--Spain--History--20th century.
Censorship--Spain--History--20th century.
Prohibited books--Spain--History--20th century.