Xadrez Cósmico
| Book | The World of Null-A |
| Format | Paperback |
| Language | Portuguese |
| This Edition Published | 1956 |
| Author | A. E. van Vogt |
| Translated by | T. Araújo |
| Cover Art by | Cândido Costa Pinto |
| Publisher | Livros Do Brasil |
| Publisher Series | Colecção Argonauta |
| Format | Paperback |
| Language | Portuguese |
| Location | Portugal |
| This Edition Published | 1956 |
| Series Number | 31 |