TY  - BOOK
AU  - Handley, 1943- 
TI  - Speed mathematics : secret skills for quick calculation 
SN  - 0471467316 
U1  - 513.9 HAN 2000 
PY  - 2003///
CY  - Hoboken
PB  - John Wiley & Sons
KW  - Mental arithmetic
ER  -