Polya, G. <br/><br/>
How to solve it  a new aspect of mathematical method 
foreword by John H. Conway 
 - exp. 
 - Princeton  Princeton University Press  2004 
 - xxvii, 253p. 
 - Princeton Science library .
<br/><br/>  
<br/><br/><label>ISBN: </label>069111966X 
<br/><br/><label>Dewey Class. No.: </label>510.9  / P781.HS