BT technology journal / 
  BT technology 
BT Laboratories. 
 - London :  British Telecommunications plc,  1991- 
 - v. :  ill. ;  30 cm. 
 - Quarterly 
 - Vol. 9, no. 3 (July 1991)- 
<br/><br/><label>ISSN: </label>1358-3948 
<br/><br/><label>Subjects--Corporate Names: </label><br/> British Telecom-- Periodicals.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication-- Great Britain-- Periodicals.
<br/><br/><label>Dewey Class. No.: </label>621.38205