John,A J <br/><br/>
Power System Digital Protection for 

 - 1st ed. 
 - Sankar Book Agency  New Delhi  2012 
 - ix,203p. 
<br/><br/><label>ISBN: </label> RS 1345.00 
<br/><br/><label>Dewey Class. No.: </label>621.317 JON,A.J