Giacaglia, G.E.O. <br/><br/>
Perturbation methods in non-linear systems 

 - LoNew Delhion  George Allen & Unwin  1972 
 - viii, 369p., 22 cm. 
 - Applied mathematical science .
<br/><br/><label>ISBN: </label>0045100497 
<br/><br/><label>Dewey Class. No.: </label>515.35,  / DD, Gia