Electrical engineer's reference book 
/edited by M.A.Laughton, M.G. Say 
 - 14th ed. 
 - London  Butterworth  1985 
 - varied pages. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>408004320 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical engineering
<br/><br/><label>Dewey Class. No.: </label>621.3  / ELE