Boyce, William E. <br/><br/>
Elementary differential equations and boundary value problems, William E.Boyce, eng 

 - 6th ed. 
 - New York, John Wiley, US  1997 
 - xvi, 749p.  24 cm. 
<br/><br/><label>ISBN: </label>0471089559 
<br/><br/><label>Dewey Class. No.: </label>515.35,  / D, Boy