Polya, George. <br/><br/>
Mathematical discovery  

 - New York :   John Wiley,   1965. 
 - XVII, 807 ;  
<br/><br/><label>ISBN: </label>0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical Sciences
<br/><br/><label>Dewey Class. No.: </label>515  / POL