Simpson, Robert S. <br/><br/>
Effective audio-visual :  a user's handbook / 
Robert S. Simpson 
 - Third edition. 
 - Oxford :  Focal Press,  1996. 
 - viii, 255 pages :  color illustrattions   24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0240514165 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Audio-visual
<br/><br/><label>LC Class. No.: </label>LB 1043 S55 1999 REF