Say, Maurice George. <br/><br/>
Direct current machines 
Maurice George Say, E. Openshaw Taylor 
 - New York  Wiley  c1980. 
 - x, 380 p.  ill.  23 cm. 
<br/><br/> "A Halsted Press book." 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0273012223 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric machinery--Direct current.