Kelley, Walter G. <br/><br/>
The theory of differential equations :  classical and qualitative / 
Walter Kelley, Allan Peterson. 
 - xi, 413 p. :  ill. ;  24 cm. 
<br/><br/>
<br/><br/><label>ISBN: </label>0131020269 
<br/><br/><label>LCCN: </label>2003054907 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations
<br/><br/><label>LC Class. No.: </label>QA431  / .K443 2004