Calcudoku Puzzles Book - 200 Hard to Master Puzzles 9x9 (Volume 4) (Calcudoku - Hard to Master)
| Country | USA |
| Brand | Ritual Limited |
| Manufacturer | Ritual Limited |
| Binding | Paperback |
| ItemPartNumber | Refer to Sapnet. |
| UnitCount | 1 |
| EANs | 9781068447013 |
| ReleaseDate | 0000-00-00 |