Das, B. C. and Mukherjee, B. N. <br/><br/>
Higher secondary trigonometry 

 - 3rd ed. 
 - Calcutta  ; U. N. Dhur And Sons 
 - xi,229p. 
<br/><br/><label>ISBN: </label> 15.30 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics<br/>Trigonometry
<br/><br/><label>Dewey Class. No.: </label>516.24  / DAS