| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Gemmology | 978-0-7198-0361-1 (0-7198-0361-6) | 2008 | |
| Gemmology | 978-0-7506-4411-2 (0-7506-4411-7) | 1999 | |
| Gems: Their Sources, Descriptions and Identification | 978-0-7506-1674-4 (0-7506-1674-1) | 1995 | Webster |
P.G. · P. G. Read · P R · Peter G. · Peter R. · Peter Read