The physics of optical communication  [videorecording] / 
An RhR production for British Telecom. 
 - [London] :  Education Service, British Telecom,  1985. 
 - 1 videocassette (14 min.) 
<br/><br/>Accompanied by : The physics of optical communication : student's notes / [written by NS Educational Consultants] (15p. ; 21 cm.) [1985] . No ISBN Accompanied by : The physics of optical communication : teacher's notes / [written by : NS Educational Consultants] (11p. ; 21 cm.) [1985] . No ISBN 
<br/><br/><label>ISBN: </label>No ISBN 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Optical communications.
<br/><br/><label>Dewey Class. No.: </label>535.3  / PHY