Say, M G <br/><br/>
Direct Current Machines 

 - London  ELBS  1980 
 - p.380 
<br/><br/><label>ISBN: </label>0273012223 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Direct Current Machines<br/>Magnetic Machines
<br/><br/><label>Dewey Class. No.: </label>621.3132 S274D