Kelley, Walter <br/><br/>
The theory of differential equations classical and qualitative / 
Walter Kelley, Allan Peterson 
 - Upper Saddle River, N.J. :  Pearson Prentice Hall,  c2004 
 - 413 p. :  ill. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0131020269 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DIFFERENTIAL EQUATIONS
<br/><br/><label>LC Class. No.: </label>QA431  / K444T