Warrington, A. R. Van C. <br/><br/>
Protective relays :  their theory and practice / 
by A. R. van C. Warrington 
 - London :  Chapman & Hall,  1968- 
 - 2 v. :  ill. ;  26 cm. 
<br/><br/><label>ISBN: </label> PND 119.20 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Protective relays
<br/><br/><label>Dewey Class. No.: </label>621.3178