Rann,David. <br/><br/>
Z;A Beginner's guide. 

 - ed. 
 - london :  Chapman and hall,  1994. 
 - 190  p. ;    cm. 
<br/><br/>index. 
<br/><br/><label>ISBN: </label>9780412556609 :  $ 
<br/><br/><label>Subjects--Topical Terms: </label><br/>computing and information system.