Pl̤ya, George,  1887-1985. <br/><br/>
Mathematical discovery  on understanding, learning, and teaching problem solving /  [Book] : 
George Polya. 
 - Combined ed. 
 - New York :  Wiley,  c1981. 
 - xxv, 220 p. :  ill. ;  22 cm. 
<br/><br/> All. 
<br/><br/><label>ISBN: </label>0471089753 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Problems, exercises, etc.<br/>Problem solving.
<br/><br/><label>Dewey Class. No.: </label>510.76