DERRICK, William R. <br/><br/>
Elementary Differential Euations With Applications 

 - 2nd Ed 
 - London.  Addison-Wesley Publidhing Com  pany.      1981 
 - xii, 532p. 
<br/><br/><label>ISBN: </label>201031620 
<br/><br/><label>Dewey Class. No.: </label>515.35