Living with technology: Signals 

 - Milton Keynes  Open University press  1982 
 - 30p. 
<br/><br/><label>ISBN: </label> UKP 1.45 
<br/><br/><label>Source: </label> UKP 1.45 
<br/><br/><label>Dewey Class. No.: </label>600 LIV