| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Building Mental Muscle: Conditioning Exercises for the Six Intelligence Zones | 978-O-91641O-62-9 (O-91641O-62-5) | 1999 | Allen D. Bragdon |
D D · D. G. · D. P. · D. PH. · David D. · David G. · David P. · P.G. · Ph.D.