Polya, G  . <br/><br/>
How to solve it: a new aspect of mathamatical method /   Textual Documents 
G Polya. 
 - New Delhi :   Prentice Hall of India ,   1985. 
 - NULL ;   NULL. 
<br/><br/><label>Subjects--Index Terms: </label>Competitive examination 
<br/><br/><label>Dewey Class. No.: </label>001.076  / POL