Johns, A.T. <br/><br/>
Digital protection for power systems. 
A.T.Johns 
 - New Delhi  Shankar Book Agency  2012 
 - xi, 200p  IET Power Series 
<br/><br/><label>ISBN: </label>9789381893012 
<br/><br/><label>Dewey Class. No.: </label>621.38232  / JO-D