Nagle, Kent R. <br/><br/>
Fundamental of Differental Equations  Fundamental of Differental Equations and Boundary Value Problems 

 - 4th Ed. 
 - Boston   Pearson  2004 
 - vi,744p.:  27cm. 
<br/><br/><label>ISBN: </label>0321173198 
<br/><br/><label>Dewey Class. No.: </label>371/  / NAG