Macpherson,Sandra <br/><br/>
What are vads ? a guide to value added and data services  [Books]. 
Sandra Macpherson 
 - Oxford Road, Manchester ,Engla  NCC  1987 
 - Pages: 100 
<br/><br/><label>ISBN: </label>085012669X  0.00 
<br/><br/><label>Subjects--Personal Names: </label><br/>Telecommunication systems.
<br/><br/><label>Dewey Class. No.: </label>TK/5105  / MAC