TY  - BOOK
AU  - Lewis, Lorna
TI  - Leonardo: the inventor and pioneer 
U1  - GC 927 L673 1963 
PY  - 1963///
CY  - London
PB  - Heinemann
KW  - Leonardo da Vinci, 1452-1519.
KW  - Inventors--Biography.
ER  -