"WATSON , DAVID" <br/><br/>
Cambridge IGCSE and O level Computer Science (2nd Edition) 

 - UK  Hodder Education  2021 
 - 390 
<br/><br/><label>ISBN: </label>9781398318281 
<br/><br/><label>Dewey Class. No.: </label>001.642  / T 1261