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

 - 1st 
 - New Delhi  Wiley Eastern Limited  1979 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical Engineering
<br/><br/><label>Dewey Class. No.: </label>621  / SI-W