O Caos Suicida
| Format | Paperback |
| Language | Portuguese |
| This Edition Published | 1971 |
| Original Title | All Fools Day |
| Original Language | English |
| Author | Edmund Cooper |
| Translated by | Eurico da Fonseca |
| Cover Art by | Lima de Freitas |
| Publisher | Livros Do Brasil |
| Publisher Series | Colecção Argonauta |
| Format | Paperback |
| Language | Portuguese |
| Location | Portugal |
| This Edition Published | 1971 |
| Pages / Font | 178 pages |
| Series Number | 165 |