TY  - BOOK
AU  - Gelb, Michael J.
TI  -  Da Vinci decoded : discovering the spiritual secrets of Leonardo's seven principles
SN  - 0385339399
U1  - 158.1 Gel/Da-V 
PY  - 2004///
CY  - New York
PB  - Delacorte Press
KW  - Leonardo, da Vinci, 1452-1519 Creative thinking
ER  -