Das, B.C. <br/><br/>
Integral calculus :  includind differential equation /. 
Das, B.C. 
 - 54th ed. 
 - Kolkata:   U.N. Dhur & Sons Private,  C 2012 
 - xxxvi, 594p.  18cm 
<br/><br/><label>ISBN: </label>8185624917 
<br/><br/><label>Dewey Class. No.: </label>515.3