| Original Title | Dunderklumpen! |
| Original Language | Swedish |
| Author | Beppe Wolgers |
| Illustrator | Per Åhlin |
| Translated by | Grete Janus Hertz |
| Copyright Holder | GK-Film |
| Publisher | Williams Forlag A/S |
| Printed by | Johnson Hill AB, Kumla |
| Format | Hardback |
| Language | Danish |
| Copyright | 1973 |
| This Edition Published | 1974 |
| ISBN | 87 7544 178 0 |
Added by moelhauge