Jan ja kadonneet helmet
| Book | Jan og de forsvundne perler |
| Publisher | Weilin+Göös |
| Translated by | R. Terhomaa |
| Cover Art by | Ernst Køhler |
| Illustrator | Ernst Køhler |
| Copyright Holder | Grafisk Forlag |
| Printed by | Amer-yhtymä Oy Weilin+Göösin kirjapaino |
| Series | Jan (3) |
| Format | Hardback |
| Language | Finnish |
| Location | Finland |
| Printed | 1978 |
| Copyright | 1970 |
| Pages / Font | 81 pages |
| ISBN | 951-35-1184-7 |
| YKL (Finnish) | L 8433 |
| Series Number | 10 |
Added by Gumby74