Cornell University Library · Nabu Press
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Opium Traffic in Its International Aspects | 978-1-143-09140-7 (1-143-09140-X) | 2010 |
| The Opium Traffic in Its International Aspects: | 978-1-112-05172-2 (1-112-05172-4) | 2009 |