Calendar: Humanity's Epic Struggle to Determine a True and Accurate Year
| Country | USA |
| Brand | Oxford University Press, USA |
| Manufacturer | Oxford University Press |
| Binding | Paperback |
| ItemPartNumber | black and white plates and tables |
| UnitCount | 1 |
| EANs | 9780192862051 |
| ReleaseDate | 0000-00-00 |