Fred Bull · Fred G. Bell · Freddy Balle
Pyradyne Publishing · Routledge
| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| Geological Hazards: Their Assessment, Avoidance and Mitigation | 978-0-415-31851-8 (0-415-31851-3) | 2003 |
| Rays of Truth: Crystals of Light | 978-0-9740311-0-1 (0-9740311-0-0) | 1998 |