Payne, A.. <br/><br/>
Computer Software for Schools /  

 - 1st ed /  
 - London :   Pitman Books Ltd. ,   1989 
 - p263 :  
<br/><br/><label>ISBN: </label>0-273-01583-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Software
<br/><br/><label>Dewey Class. No.: </label>Bv  / M0