Say, M. G. <br/><br/>
The electrical engineer's reference book 

 - 11th ed. 
 - London  George Newnes  1964 
 - Various pages 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical engineering<br/>Engineering
<br/><br/><label>Dewey Class. No.: </label>621.3  / SAY