Post, E. J. <br/><br/>
Formal structure of electromagnetics :  general covariance and electromagnetics / 
E. J. Post 
 - Amsterdam :  North-Holland Pub. Co.,  c1962. 
 - xiv, 204 p. ;  21 cm. 
<br/><br/> Includes Index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electromagnetic theory.<br/>Transformations (Mathematics)
<br/><br/><label>Dewey Class. No.: </label>535.1  / POF 1962