Difficult Riddles For Smart Kids: Science and Technology Edition: 350 Fun Brain-Stumpers For Kids and Families: Ages 8 and up (7-9, 9-13+) (Eleven Worlds to Explore)
| Country | USA |
| Brand | HarperCollins |
| Manufacturer | HarperCollins |
| Binding | Hardcover |
| ItemPartNumber | 0688091717 |
| ReleaseDate | 1989-09-18 |
| UnitCount | 1 |
| Format | Picture Book |
| EANs | 9780688091712 |