Saffady, William. <br/><br/>
Video-based Information Systems.  A Guide to Educational, Business, Library and Home Use 

 - New York  North-Holland  1985 
 - 240 
<br/><br/><label>ISBN: </label>0838904254 
<br/><br/><label>Dewey Class. No.: </label>621.3891 S128