POLYA, G <br/><br/>
How to Solve It - A New Aspect of mathematical method 

 - 2 nd 
 - New Delhi  Prentice - Hall of India Pvt  Ltd.       2003 
 - xxi, 253p 
<br/><br/><label>ISBN: </label>81-203-1888-9 
<br/><br/><label>Dewey Class. No.: </label>511.8076