Doble Engineering Company <br/><br/>
Reference Book on High Voltage Circuit Breakers 

 - USA  Doble Engineering Company  2004 
 - 142 
<br/><br/> Complimentary copy Received from Sri. A. Sudindra, DCCD 
<br/><br/><label>Universal Decimal Class. No.: </label>621.316.57.027.3  / DOB.04