Loney,S.L., <br/><br/>
Plane Trigonometry Part 1 

 - New Delhi  S. Chand & Company  2008 
 - 327p. 
<br/><br/><label>ISBN: </label>8121908019 
<br/><br/><label>Dewey Class. No.: </label>516.24  / LON/PLA