Siemens,  <br/><br/>
Work , power and efficiency 

 - New Delhi  :  Wiley Eastern Ltd,  1979. 
 - 65 
<br/><br/><label>ISBN: </label>81-224-0227-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical Electronics Communication,
<br/><br/><label>Dewey Class. No.: </label>621.317  / SIE