| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| How Green Is Your Garden? | 978-0-470-84539-4 | 2003 | |
| Realms of Impossibility: Air | 978-0-470-84439-7 | 2002 | Ed Liu |
| Realms of Impossibility: Ground | 978-0-470-84442-7 | 2002 | " |
| Realms of Impossibility: Water | 978-0-470-84441-0 | 2002 | " |
| Sins and Other Spatial Relatives | 978-0-9527551-1-1 | 2000 | |
| Virtually Venice | 978-0-9527551-2-8 | 2006 | |