Encyclopedia of educational media communications and technology / 
edited by Derick Unwin. 
 - London :  McMillan,  1978. 
<br/><br/>Include references & index. 
<br/><br/><label>ISBN: </label>0333185501 (hbk.) 
<br/><br/><label>LCCN: </label>200402923 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedia.<br/>Media communication.
<br/><br/><label>LC Class. No.: </label>HD30.15  HF5621  / .B55 2014 vol. 1 
<br/><br/><label>Dewey Class. No.: </label>371.3078  / UNW