Lehoczky, Sandor <br/><br/>
The art of problem solving / 
Sandor Lehoczky, Richard Rusczyk. 
 - Seven edition 
 - 278 pages ;  27 cm. 
<br/><br/> Includes index 
<br/><br/>Volume 1: the basics. 
<br/><br/><label>ISBN: </label>0977304566  9780977304561  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Problem solving
<br/><br/><label>LC Class. No.: </label>QA63