Mason, C. Russell. <br/><br/>
The art and science of protective relaying / 
C. Russell Mason. 
 - New York :  Wiley,  1956. 
 - 410 p. :  ill.;  24 cm. 
 - General Electric series, written for the advancement of engineering practice. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric relays.
<br/><br/><label>Dewey Class. No.: </label>621.319