IEEE recommended practice for protection and coordination of industrial and commercial power systems 
/ Institute of electrical and electronics engineers 
. - New York  : IEEE, 1975
. - 312 p.  : ill.  ; 26 cm. 
<br/><br/>Bibliogr., index 
<br/><br/><label>Source: </label> Don 
<br/><br/><label>Universal Decimal Class. No.: </label>621.3 032.