Differential Equations / 
Blanchard, Paul ; Robert Devaney ; Glen Hall 
 - custom edition  
 - Toronto:  Nelson Education ,  2012. 
 - 834 p,: 
<br/><br/><label>ISBN: </label>9780176649876 
<br/><br/><label>LC Class. No.: </label>QA371  / .D53  2012