Prasad Phoolan and Ravindran Renuka <br/><br/>
Partial differential equations 

 - 2nd 
 - New Delhi  New Age International Publishers  2015 
 - 232 
<br/><br/><label>ISBN: </label>9788122430684 
<br/><br/><label>Dewey Class. No.: </label>515.353 PRA