R. S. · Resed Staff · Rusty Staub
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Gravitation - Fateful First Encounter | 978-1-57032-914-2 (1-57032-914-1) | 2004 |
| Gravitation - One Million Copies!? | 978-1-57032-916-6 (1-57032-916-8) | 2004 |
| Gravitation - Secrets of a Troubled Past | 978-1-57032-917-3 (1-57032-917-6) | 2004 |