Polya G <br/><br/>
Problems and theorms in analysis.2V. 

 -  1972 
<br/><br/><label>Standard No.: </label>125966 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B3, L2.1-.2 ;1