Smith, Ernest F. <br/><br/>
Rotary and motor convertors  A hand-book for operators and attendants 

 - London  Technical Press Ltd.  1926 
 - xii,233p.  17cm. 
<br/><br/> Dormitory:24654 
<br/><br/><label>Dewey Class. No.: </label>621.312  / S53R