Mostly Harmless (Hitchhiker's Guide to the Galaxy Book 5)
| Country | USA |
| Brand | University of Hawaii Press |
| Manufacturer | University of Hawaii Press |
| Binding | Paperback |
| ItemPartNumber | 15 illustrations |
| ReleaseDate | 2008-09-30 |
| UnitCount | 1 |
| Format | Illustrated |
| EANs | 9780824833152 |