Editions QUAE GIE · Various small imprints
| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Lithops, joyaux du veld | Relié | 978-2-7592-0850-0 (2-7592-0850-8) | 2010 | Mickael Legrand · Christopher Barnhill |
| The genus Conophytum: A conograph | Hardcover | 978-0-620-17633-0 (0-620-17633-4) | 1993 | |
| The genus Conophytum: A conograph | 978-0-620-17634-7 (0-620-17634-2) | 1993 | ||
A. H. · s. a. · S.A. Hammer · S H · Steven A. · Steven Hammer