Pólya, George <br/><br/>
How to solve it  a new aspect of mathematical method. 

 - 2d ed. 
 - Garden City, N.Y.  Doubleday  1957. 
 - 253 p.  18 cm. 
 - Doubleday anchor books, A93 .
<br/><br/><label>LCCN: </label>57005794 //r912 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching.<br/>Mathematics--Problems, exercises, etc.
<br/><br/><label>LC Class. No.: </label>QA11  / .P6 1957 
<br/><br/><label>Dewey Class. No.: </label>510.7