Das , B .C <br/><br/>
Differential Calculus / 
by B .C . Das 
 - 55th Ed. 
 - New Delhi :  U.N. Dhur  & Sons Private Ltd.  2017 
 - 607 p.  20 cm. 
 - Differential Calculus .
<br/><br/><label>ISBN: </label>9789380673875 
<br/><br/><label>Dewey Class. No.: </label> / DAS