Theraja,B.L. <br/><br/>
A Text Book of Electrical Technology ( V.I to IV.) 

 - 21st. 
 - New Delhi  Nirja Construction & Devlt & Co.(P) Ltd.  1995 
 - xxxii,1867p. 
<br/><br/><label>ISBN: </label> 350 
<br/><br/><label>Dewey Class. No.: </label>621.31