| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| The Chemistry of Essential Oils: An Introduction for Aromatherapists, Beauticians, Retailers and Students | 978-1-870228-12-1 (1-870228-12-X) | 1996 |
D.G. Williams · D W · D. Williams · David G. · David W. · David Williams · G. Williams