Say, M.G <br/><br/>
Direct Current Machines 
M.G Say 
 - London  The English Language book society  1980 
 - x, 380 p.  
<br/><br/> Includes References and Index 
<br/><br/><label>ISBN: </label>0-273-01222-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Direct Current
<br/><br/><label>Dewey Class. No.: </label>TBB D663, 6 MOS