Niles, Nathan O. <br/><br/>
Plane trigonometry / 

 - 3d. ed. 
 - New York :  Wiley,  c1976. 
 - xiii, 394 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0471640255 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plane trigonometry.
<br/><br/><label>Dewey Class. No.: </label>516 WIL 1976 A058 Or.