Theraja B. L. <br/><br/>
A Text Book of Electical Technology: Volume II DC Machines in S.I system of Units 

 - New Delhi  S. Chand  2018 
<br/><br/><label>ISBN: </label>9788121924375 
<br/><br/><label>LC Class. No.: </label>TS 183  / C436 2018