Nayfeh.Hasan, Ali <br/><br/>
Perturbation methods 

 - Weinheim  John Wiley & Sons  1973-R2004 
 - xii,425p.  PB  22cm. 
<br/><br/> includes index 
<br/><br/><label>ISBN: </label>9780471399179 
<br/><br/><label>Dewey Class. No.: </label>515.35  / NAY