Mostly Harmless (Hitchhiker's Guide to the Galaxy Book 5)
| Country | USA |
| Author | Douglas Adams |
| Binding | Kindle Edition |
| EISBN | 9780307497901 |
| Format | Kindle eBook |
| Label | Del Rey |
| Manufacturer | Del Rey |
| NumberOfPages | 225 |
| PublicationDate | 2008-12-25 |
| Publisher | Del Rey |
| ReleaseDate | 2008-12-30 |
| Studio | Del Rey |