Prasad, Surya Bhushan <br/><br/>
Teach yourself : trigonometry 
Surya Bhushan Prasad 
 - New Delhi  Bharati bhawan publishers  1987 
 - 244p. 
<br/><br/><label>ISBN: </label> 11.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics<br/>Trigonometry
<br/><br/><label>Dewey Class. No.: </label>516.24  / PRA