Electrical Engineer's Reference Book / 
Edited by M.A. Laughton and M.G. Say 
 - 14th edition 
 - London :  Butterworth -Heinemann ,  © 1985. 
 - 1008 pages :  illustrations ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>‎ 9780750613019 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric Engineering