Clayton,A.E. <br/><br/>
Performance and design of DC machine 

 - 3rd ed. 
 - London  The English language book society  1971 
 - xx,516 p. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0-273-40186-6 
<br/><br/><label>Dewey Class. No.: </label>S/C-S/T D663,6:4 J9;12