Der Unbesiegbare
| Book | Niezwyciężony* |
| Format | Paperback |
| Language | German |
| First Printing in Country | 1969 |
| Original Title | Niezwyciężony |
| Original Language | Polish |
| Author | Stanisław Lem |
| Publisher | Fischer Taschenbuch Verlag |
| Translated by | Roswitha Dietrich |
| Licensed from | Universitas Verlag |
| Licensed to | Fischer Taschenbuch Verlag GmbH |
| Copyright Holder | Verlag Volk und Welt |
| Cover/Jacket Design by | Hans Maier |
| Production | Hanseatische Druckanstalt GmbH, Hamburg |
| Format | Paperback |
| Language | German |
| Location | Germany |
| First Printing in Country | 1969 |
| This Edition Published | 1971 |
| Pages / Font | 157 pages |
| ISBN | 380-ISBN-3-596-21199-9 |
| Price | 3,80 DM |