Development of communication - from telegraph to TV  [motion picture] 

 - 2nd ed. 
 - Chicago :  Encyclopaedia Britannica Educational Corporation,  1955 
 - 1 film reel (10 min.) :  sd., b&w. ;  16 mm. 
<br/><br/> Panduan guru : 4th.  Mengkaji perkembangan sistem perhubungan yang moden seperti televisyen, radio, teletype dan sebagainya 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication