Leonard, T. Hillen, I. E.  <br/><br/>
Partial differential equations:   theory and completely solve problems/   
T. Hillen, I. E. Leonard and H. van Roessel 
 - Second edition 
 - Canada:  Friesen Press,   c2019.  
 - vii, 678 pages ;   23 cm. 
<br/><br/>Includes appendix, bibliographical references and index.<br/> 
<br/><br/><label>ISBN: </label>9781525550256 (pbk.)