Gaytero, Reynaldo B. <br/><br/>
Powerful mathematics shortcuts and techniques in multiplication :  30 techniques for all levels and for all times / 
Reynaldo B. Gaytero. 
 - 167 pages :  ilustrations ;  21 cm 
<br/><br/> Primary 
<br/><br/><label>ISBN: </label>9719175001 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Multiplication
<br/><br/><label>Dewey Class. No.: </label>513.213