Benjmin, Arthur <br/><br/>
Secrets of mental health : the mathemagician's guide to lightning calculation and amazing math tricks 

 - 1st ed. 
 - New york    Three River Prens  2006 
 - 278 p. 
<br/><br/><label>ISBN: </label>978-0-307-33840-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Magic tricks in mathematics education<br/>Mental arithmetic - Study and teaching<br/>Mental calculator
<br/><br/><label>Dewey Class. No.: </label>C 510 B43s