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 |
| Manufacturer | New American Library |
| Binding | Hardcover |
| ReleaseDate | 2009-04-28 |
| UnitCount | 2 |
| Format | Unabridged |
| EANs | 9780451225856 |