300+ Mathematical Pattern Puzzles: Number Pattern Recognition & Reasoning (Improve Your Math Fluency)
| Country | USA |
| Brand | Douqu |
| Manufacturer | Douqu |
| Binding | Unknown Binding |
| ItemPartNumber | 10 |
| Model | 10 |
| Color | Blue2 |
| Size | 7cm |
| EANs | 6959786428741 |
| ReleaseDate | 0000-00-00 |