Walker, Tricia <br/><br/>
Computer science 
Tricia Walker 
 - London  Cassell  1989 
 - 153p.  ill.  25cm. 
<br/><br/><label>ISBN: </label>013280199X  RM23.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Grammar