"Coddington, Earl A." <br/><br/>
Theory of Ordinary Diffe 

 - New Delhi  T.M.H.  1972 
 - "xii, 429" 
<br/><br/><label>ISBN: </label>70992568 
<br/><br/><label>Dewey Class. No.: </label>AL-  / 24 & 25