WARRINGTON, ALBERT RUSSELL VAN CORTLANDT <br/><br/>
PROTECTIVE RELAYS: THEIR THEORY AND PRACTICE 

 - 3RD ED. 
 - LONDON Reino Unido  CHAPMAN AND HALL  1977 
 - 434 
<br/><br/><label>ISBN: </label>0470263431 
<br/><br/><label>LCCN: </label>22098 
<br/><br/><label>Dewey Class. No.: </label>621.317