Williams, R. H. <br/><br/>
British commercial computer digest 

 - 9th ed. 
 - Oxford  Pergamon press  1968 
 - Various pages 
<br/><br/><label>ISBN: </label> 164 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer science
<br/><br/><label>Dewey Class. No.: </label>004  / WIL