COPSON, E.T <br/><br/>
Partial differential equations 
/ [by] E.T.Copson 
 - London  Cambridge University Press  1975 
 - vii, 279 p. 
<br/><br/><label>ISBN: </label>521098939 
<br/><br/><label>Dewey Class. No.: </label>515.353  / COP