Etgen Garret J <br/><br/>
Introduction to ordinary differential eqautions with difference equations,numerical methods, and applications 

 - New York       Harper and Ro        1977 
 - x, 517p.  cm. 
<br/><br/><label>Standard No.: </label>22887 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B331,1:1, L7