Theraja B. L. <br/><br/>
A Textbook of electrical technology vol. II 

 - NEW DELHI  S. Chand And Co. Pvt. Ltd.  2007 
 - 145 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ELECTRICAL
<br/><br/><label>Dewey Class. No.: </label>621.3