Charkey, Edward S. <br/><br/>
Electromechanical system components   
by Edward S. Charkey 
 - New York  John Wiley  1972 
 - ix, 529p. 
<br/><br/><label>ISBN: </label>0471147001 
<br/><br/><label>Dewey Class. No.: </label>621.31042  / N72