Educational Foundation for Visual Aids (Great Britain). Experimental Development Unit. <br/><br/>
A report on 16mm sound film projectors. 

 - London   Educational Foundation for Visual Aids National Committee for Audio-Visual Aids in Education,  1970. 
 - 30p  20cm 
 - Report, 7. .
<br/><br/><label>Subjects--Uniform Titles: </label><br/> Motion picture projectors.
<br/><br/><label>Dewey Class. No.: </label>681.13 E24r