Mörköooppera
| Illustrator | Ulla Vaajakallio |
| Publisher | Weilin+Göös |
| Copyright Holder (Text) | Marjatta Pokela |
| Copyright Holder (Illustrations) | Ulla Vaajakallio |
| Copyright Holder | Amer-yhtymä Oy Weilin+Göös |
| Printed by | Amer-yhtymä Oy Weilin+Göösin kirjapaino |
| Format | Hardback |
| Language | Finnish |
| Copyright | 1980 |
| Printed | 1982 |
| Pages / Font | Unpaginated pages |
| YKL (Finnish) | L783 |
| ISBN 10 | 951-35-2289-X |
| Impression/Printing No. | 4 |
| Notes | Companion book to Mörköooppera |
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