Children's encyclopedia "Why 100,000?" Extracurricular reading for primary school students (Building The Ultimate Brain)
| Country | USA |
| Brand | Doubleday |
| Manufacturer | Doubleday |
| Binding | Hardcover |
| ItemPartNumber | 9780385511926 |
| Color | Multicolor |
| ReleaseDate | 2005-05-03 |
| UnitCount | 1 |
| EANs | 9780385511926 |