Norman, Robin <br/><br/>
Learning basic with your sinclair zx80 

 - England:  Butterworth & co, publisher,  1981. 
 - 154p.  21cm 
<br/><br/><label>ISBN: </label>0408011017 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Knowledge, the book, systems, computer science
<br/><br/><label>Dewey Class. No.: </label>001.64  / NOR