Bullard, J. R. ; Mether, C. E. <br/><br/>
Audiovisual fundamentals : basic equipment operation and simple materials production. 

 - 150p. 
<br/><br/><label>ISBN: </label>0-697-06043-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audio-visual aids--Handbooks