Four Ages of Understanding: The First Postmodern Survey of Philosophy from Ancient Times to the Turn of the Twenty-First Century (Toronto Studies in Semiotics)
| Country | USA |
| Brand | PH Prevue Hendryx |
| Manufacturer | Prevue Pet Products |
| Binding | Misc. |
| ItemPartNumber | 91340 |
| Color | Gray |
| Size | 1/2" |
| UnitCount | 1 |
| UPCs | 048081913406 |
| EANs | 0048081913406 |
| ReleaseDate | 0000-00-00 |