"Polya, G." <br/><br/>
How To Solve It A New As 

 - Second 
 - New Delhi  P.H.  2005 
 - "xxi,253" 
<br/><br/><label>ISBN: </label>9.79E+12 
<br/><br/><label>Dewey Class. No.: </label>510  / POL