Warrington ,A.R. Van C. <br/><br/>
Protective Relays :their theory and practice 

 - 3rd 
 -  1977 
 - xiii,varies 
<br/><br/><label>ISBN: </label>0-412-15380-7 
<br/><br/><label>Subjects--Personal Names: </label><br/>Electronic Engineering
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technology