Fedida, Sam <br/><br/>
Viewdata revolution / 
Sam Fedida, Rex Malik 
 - New York :  Wiley,  1979 
 - 186 p. :  ill. ;  23 cm. 
<br/><br/> 'A Halsted Press book.'  Includes index 
<br/><br/><label>ISBN: </label>0470268794 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data transmission systems<br/>Information storage and retrieval systems<br/>Television systems