Honsberger, Ross,  1929- <br/><br/>
Ingenuity in mathematics 

 - New York  Random House/Singer School Division  [c1970] 
 - vii, 204 p.  illus  24 cm. 
 - New mathematical library  23 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>510