Sen, Rajkumar <br/><br/>
An alemetary treatise on trigonometry / 
by Rajkumar Sen 
 - Calcutta :  Students Library,  1899 
 - xiii, 252 p. ;  20 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigonometry
<br/><br/><label>Dewey Class. No.: </label>514