Handley, 1943-  <br/><br/>
Speed mathematics : secret skills for quick calculation  
/ Bill Handley. 
 - Hoboken  John Wiley & Sons  2003. 
 - xiii, 256p.  23cm 
<br/><br/><label>ISBN: </label>0471467316  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mental arithmetic
<br/><br/><label>Dewey Class. No.: </label>513.9 HAN 2000