Warrington, A.R. <br/><br/>
Protective relays 

 - 3rd ed. 
 - London  ; Chapman  , 1969 
 - xiii,434p.  , V.2 
<br/><br/><label>ISBN: </label> £13.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical Engineering<br/>Engineering
<br/><br/><label>Dewey Class. No.: </label>621.31  / WAR