| title | media type | ISBN-13 | year of publica- tion | other author(s) | |
|---|---|---|---|---|---|
| Focus on forgeries: A guide to forgeries of common stamps | Paperback | 978-0-940403-88-8 | 2000 | ||
| Herbs of Choice: The Therapeutic Use of Phytomedicinals | " | 978-1-56024-895-8 | 1994 | ||
| Philatelic Forgers: Their Lives and Works | " | 978-0-940403-37-6 | 1991 | ||
| Rational Phytotherapy: A Physicians' Guide to Herbal Medicine | Gebunden | 978-3-540-67096-4 | 2000 | Volker Schulz · Rudolf Hänsel | |
| Rational Phytotherapy: A Physicians' Guide to Herbal Medicine | Hardcover | 978-0-387-62648-2 | 1997 | Volker Schulz · Rudolf Hansel | |
| Rational Phytotherapy: A Physician's Guide to Herbal Medicine | Gebunden | 978-3-540-62648-0 | 1997 | Volker Schulz · Rudolf Hänsel | |
| Rational Phytotherapy: A Reference Guide to Physicians and Pharmacists | " | 978-3-540-40832-1 | 2004 | Volker Schulz · Rudolf Hänsel · Mark Blumenthal | |
| The New Honest Herbal: A Sensible Guide to Herbs and Related Remedies | Paperback | 978-0-397-53081-6 | 1987 | ||
E.T. · E Tyler · V. E. Tyler · V. T. · Varro Tyler
Linns Stamp News · Lippincott Williams & Wilkins · Routledge · Springer