Averbach, Bonnie,  1933. <br/><br/>
Mathematics :  problem solving through recreational mathematics / 
Bonnie Averbach, Orin Chein. 
 - San Francisco :  W. H. Freeman,  1980. 
 - 400 p. :  ill. ;  24 cm. 
 - A Series of books in the mathematical sciences .
<br/><br/> Includes index. 
<br/><br/>Bibliography : p. 336-339. 
<br/><br/><label>ISBN: </label>0716711249 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--1961-<br/>Mathematical recreations.<br/>Problem solving.