Evaluating educational television and radio  : proceedings of the international conference on evaluation and research in educational television and radio,the open university,United Kingdom ,9-3 april 1976 
edited by Tony Bates and and John Robinson 
 - Milton Keynes:  Open university press,  1977. 
 - xviii,  410p. 
<br/><br/> HB 
<br/><br/>include bibliography and index 
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>0335000452 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audio-Visual education-Congresses<br/>Radio in education-Congresses<br/>Television in education-Congresses
<br/><br/><label>Dewey Class. No.: </label>371.33  / EVA