R. M. · Robert / Anthony, Piers, Margroff · Robert E. Margroff · Robert M.
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Chimaera's Copper | 978-0-8125-0915-1 | 1991 | Piers Anthony |
| Dragon's Gold | 978-0-8125-3125-1 | 1987 | " |
| Mouvar's Magic | 978-0-8125-1982-2 | 1993 | " |
| Serpent's Silver | 978-0-8125-0257-2 | 1989 | " |