The Public School Mental Arithmetic, Based on McLellan and Dewey's Psychology of Number
| Country | USA |
| Brand | ENJOININ |
| Manufacturer | ENJOININ |
| Binding | Shoes |
| ItemPartNumber | Q039 |
| Model | Q039 |
| Warranty | no warranty |
| Color | Black-1a |
| Size | Small |
| UPCs | 631060816715 |
| EANs | 0631060816715 |
| ReleaseDate | 0000-00-00 |