| Original Title | Encounters with the unknown |
| Original Language | English |
| Author | Colin Parsons |
| Publisher | Javier Vergara Editor |
| Publisher Series | Vergara Bolsillo |
| Introduction by | Colin Parsons |
| Translated by | Adelaida Ruiz |
| Cover/Jacket Design by | Verónica López |
| Copyright Holder | Colin Parsons |
| Copyright Holder (This Edition) | Javier Vergara Editor S.A. |
| Printed by | VERLAP S.A. |
| Series | Vergara Bolsillo |
| Format | Pocket book |
| Language | Spanish |
| Location | Argentina |
| Copyright | 1990 |
| Copyright | 1991 |
| This Impression | 1997-04 |
| Pages / Font | 240 pages |
| ISBN 10 | 950-15-1718-7 |
| Barcode (EAN) | 9 789501 517187 > |
| Series Number | 68 |
| Notes | HxWxD 17.3 x 10.9 x 1.3 cm |
