TY  - BOOK
AU  - Tocquet,Robert
AU  - Weaver,Denis
TI  - The magic of numbers: lighting calculators and their secrets, how to do mental arithmetic, animal calculator 
U1  - 510 
PY  - 1957///,c1960
CY  - London
PB  - EBK Books
KW  - Arithmetic, Mental
KW  - Animal intelligence
KW  - Prodigies, Mathematical
KW  - Mathematics
ER  -