| Author: | Metchnikoff, Elie, 1845-1916 |
| Subject: | QP, RA, Hygiene, Longevity, Aging, Older people -- Social conditions |
| Format: | Electronic text |
| Date issued: | 2016 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | The Prolongation of Life : Optimistic Studies [electronic resource] / Elie Metchnikoff |