Main control  [motion picture] / 
made by BBC-TV ; production, John Miller 
 - Milton Keynes :  Open University,  1976 
 - 1 film reel (25 min.) :  sd., col. ;  16 mm. 
 - Open University/ Mass communication & society  DE353, film no. 4 .
<br/><br/> Converted into VHS 1/2 in.  Title from title screen 
<br/><br/>Film editor, Des Murphy ; film cameraman, Michael Smee  Film editor, Des Murphy ; film cameraman, Michael Smee 
<br/><br/>Narration : Michael Smee 
<br/><br/> Discusses about main control in broadcasting 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Broadcasting<br/>Communication