Simpson, Robert S. <br/><br/>
Effective audio-visual :  a user's handbook / 
Robert S. Simpson. 
 - London ;  Boston :  Focal Press,  1987. 
 - 208 p., [4] p. of plates :  ill. (some col.) ;  26 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0240512545  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audio-visual equipment.<br/>Communication
<br/><br/><label>Dewey Class. No.: </label>001.553  / SIM N87E