Willerding, Margaret F. <br/><br/>
College algebra and trigonometry / 

 - 2d ed. 
 - New York :  Wiley,  [1975] 
 - xiv, 613 p. : 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0471946710 
<br/><br/><label>Dewey Class. No.: </label>512.13  / WIL