BOYCE, William E. <br/><br/>
Elementary Differential Equations and Boundary Value Problems. 

 - 4th 
 - Canada  John Wiley and Sons. Inc.  1986 
 - xvi, 654p. 
<br/><br/><label>ISBN: </label>0471078956 
<br/><br/><label>LC Class. No.: </label>QA371  / .B69