Ram, Badri and Vishwakarma, D. N.  <br/><br/>
Power system protection and switchgear / 

 - 2nd.  
 - New Delhi,   McGraw Hill,   c2011. 
 - xvi, 670p. ;  ill. ;  23 cm.  
<br/><br/><label>ISBN: </label>9780071077743 
<br/><br/><label>LC Class. No.: </label>18722-18726 
<br/><br/><label>Dewey Class. No.: </label>621.317