El misterio de Filadelfia: Proyecto invisibilidad
| Publisher | Plaza & Janés |
| Translated by | Ana María de la Fuente |
| Cover/Jacket Design by | Gracia |
| Imprint | Gráficas Guada, S. A. |
| Format | Pocket book |
| Language | Spanish |
| Location | Barcelona, Spain |
| This Edition Published | 1981 |
| Copyright | 1979 |
| First Printing | 1981 |
| Pages / Font | 256 pages |
| DL (Spanish) | B. 31.822-1981 |
| ISBN | 84-01-48096-5 |
Added by Peio86