Famous Frog Sudoku 600 Puzzles With Solutions. 300 Hard and 300 Very Hard: A Bathroom Sudoku Series Book
| Country | USA |
| Brand | Yiqihighgo |
| Manufacturer | Yiqihighgo |
| ItemPartNumber | Y0001-optical glass |
| UnitCount | 1 |
| UPCs | 645707373622 |
| EANs | 0645707373622 |
| ReleaseDate | 0000-00-00 |