Electrical communication 

 - Harlow :  ITTC Corporation,  1922- 
 - Quarterly 
<br/><br/> UKM: v.61-65 (1987-1991), (1993) 
<br/><br/><label>ISSN: </label>0013-4252 
 = Electrical communication 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telephone--Periodicals<br/>Radio--Periodicals<br/>Telegraph--Periodicals