Calcudoku Puzzles Book - 200 Hard to Master Puzzles 9x9 (Volume 4) (Calcudoku - Hard to Master)
| Country | USA |
| Brand | PowerStop |
| Manufacturer | POWERSTOP |
| Binding | Automotive |
| ItemPartNumber | KOE4378 |
| Model | KOE4378 |
| Warranty | 24 Month / 24,000 Mile Warranty |
| ReleaseDate | 2013-12-24 |
| UnitCount | 1 |
| UPCs | 792088966261 |
| EANs | 0792088966261 |