A.G. · Aniela & Jerzy Gregorek · Aniela and Jerzy Gregorek
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The Happy Body | 978-0-9824038-2-2 (0-9824038-2-8) | 2010 | Jerzy Gregorek |
| The Happy Body: The Simple Science of Nutrition, Exercise, and Relaxation | 978-0-9824038-1-5 (0-9824038-1-X) | 2010 | " |