3 etsivää ja kadonnut merenneito
| Book | The Mystery of the Missing Mermaid |
| Publisher | Gummerus |
| Translated by | Kristian Kardén, Tuula Syvänperä |
| Printed by | Gummerus Kirjapaino Oy |
| Copyright Holder | Random House, Inc. |
| Published in/by Arrangement with | Random House, Inc. |
| Series | The Three Investigators |
| Cover Artist | Matti Louhi |
| Format | Hardback |
| Language | Finnish |
| Location | Finland |
| Printed | 1984 |
| Copyright | 1983 |
| Pages / Font | 157 pages |
| ISBN | 951-20-2583-3 |
| YKL (Finnish) | N 8453 |
Added by Gumby74