A first list of some audio visual and other materials made by colleges and departments of education. 

 - [London] :  National Council for Educational Technology,  [1973] 
<br/><br/> Supplement. 1974. 146 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audio-visual materials -- Bibliography.--Audio-visual materials -- Bibliography.<br/>Audio-visual education.