Brown, John,  1830-1922. <br/><br/>
Telecommunications / 
J.Brown. 
 - Great Britain :  Science Paperbacks,  1974. 
 - 382p 
<br/><br/> Include İndex 379-382 
<br/><br/><label>ISBN: </label>412122103 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technology
<br/><br/><label>LC Class. No.: </label>T14.5