FRIEDRICHS K O <br/><br/>
Advanced ordinary differential equations. 

 - New York  Gordon & Breach science pub.       1965 
 - ix,205p.  cm. 
<br/><br/> Appendix :110-115P. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>B331, K5