Cold, Julian D. <br/><br/>
Perturbation methods in applied mathematics   
by Julian D.Cold 
 - Massachusetts  Blaisdell Publishing Company  1968 
 - 260p. 
 - Blaisdell Book in Pure and Applied Mathematics .
<br/><br/><label>LCCN: </label>68-10229 
<br/><br/><label>Dewey Class. No.: </label>515.35  / N685;4