TY  - BOOK
AU  - Benjamin, Arthur.
TI  - Secrets of mental math: the mathemagician's guide to lightning calculation and amazing math tricks
SN  - 0307338401
AV  - QA 111 B44 2006 
PY  - 2006///
CY  - New York
PB  - Three Rivers Press.
KW  - 1. Mental arithmetic-Study and teaching. 2. Magic tricks in mathematics education 3. Mental calculators
N1  - Includes bibliographical references and index
ER  -