Averbach, Bonnie, <br/><br/>
Problem solving through recreational mathematics / 
Bonnie Averbach and Orin Chein. 
 - Mineola, N.Y. :  Dover Publications,  2000. 
 - xvi, 458 p. :  ill. ; 
<br/><br/> Originally published: Mathematics. San Francisco : W. H. Freeman, c1980. 
<br/><br/><label>ISBN: </label>0486409171 (pbk.) 
<br/><br/><label>Subjects--Index Terms: </label>Mathematical recreations 
<br/><br/><label>Universal Decimal Class. No.: </label>51-8  / AVE