Simmonds, James G <br/><br/>
A first look at perturbation theory 

 - 2nd ed 
 - Mineola, N.Y:  Dover Publications,  1998 
 - x, 139 p. : ill. ; 22 cm 
<br/><br/><label>ISBN: </label>9780486675510 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Approximation theory
<br/><br/><label>Dewey Class. No.: </label>515.35 SIM