Graham, John,   1936- <br/><br/>
The penguin dictionary of telecommunications /  [Book]. 
John Graham, revised and updated by Sue J. Lowe.  
 - Rev. ed. 
 - London :   Penguin Books,   1983. 
 - ix, 180p. :  ill. ;  20 cm. 
<br/><br/><label>ISBN: </label>0140512373 (pbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication