Shankara Rao, K. <br/><br/>
Introduction to partial differential equations 

 - 3rd 
 - New Delhi:  PHI Learning Private Limited,  2011. 
 - xi, 488p.: 
<br/><br/><label>ISBN: </label>9788120342224 
<br/><br/><label>Dewey Class. No.: </label>515.353  / P0111 (CiE)