Honsberger, Ross,    1929- <br/><br/>
Ingenuity in mathematics /  
Ross Honsberger 
 - New York :    Random House/Singer School Division ,    [c1970] 
 - vii, 204 p. :    ill. ;    24 cm. 
 - New mathematical library,    23 .
<br/><br/>Includes bibliographical  references ( p. 203-204.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Mathematics.
<br/><br/><label>Dewey Class. No.: </label>510