Fundamentals of differential equations / 

 - Ninth edition 
, 
 - Harlow, United Kingdom :  Pearson Education,  2019. 
 - 717 pages : illustrations (some color) ; 25cm 717 pages : illustrations (some color) ; 25cm 
<br/><br/><label>ISBN: </label>9781496382405 
<br/><br/><label>Dewey Class. No.: </label>REF 515.35 N13