La era del cambio: 1956-1965: Los Mejores Relatos de Ciencia Ficcion
| Book | The History of the Science Fiction Magazine Part 4 1956-1965 |
| Format | Unknown |
| Language | Spanish |
| Author | Michael Ashley |
| Editor | Michael Ashley |
| Contributing Writer | J. G. Ballard, Robert Silverberg, Arthur Porges, Daniel Keyes, A. E. van Vogt, Brian Aldiss, Kenneth Bulmer, Harry Harrison, John Brunner |
| Format | Unknown |
| Language | Spanish |