Introducing data processing. 

 - Manchester :  NCC ,  1980. 
 - 237 p. :  ill. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 223. 
<br/><br/><label>ISBN: </label>0850122457 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic data processing.