E. C. Oliver <br/><br/>
Data processing : an instructional manual for business and accountancy students 

 - 4th ed. 
 - Winchester  "D,P"  1980 
<br/><br/><label>ISBN: </label>0905435087 
<br/><br/><label>Source: </label> 1980-575 
<br/><br/><label>LC Class. No.: </label>HF 5679