| Type | Study Guide |
| Format | USB Flash Drive, DVD |
| Language | American English |
| Publisher | Roycroft Publishing |
| Level | General, Professional |
| Features | Collection, Historic |
| Country Of Origin | United States |
| Educational Level | Professional |
| MPN | RP034 |
Public domain editions. Essential for naturopathic history. Every modality, every practitioner directory, every supplier. UNIVERSAL NATUROPATHIC ENCYCLOPEDIA (1918-19) — Benedict Lust (1,416 pages).