Data Processing and information technology:  An instructional Manual for Business and Accountancy Students/  English. 
E.C. Oliver...[et al] 
 - 9th Ed. 
 - London:  DP. Pulications. Ltd,  1993. 
 - v, 420p.:  ill;  27cm. 
<br/><br/><label>ISBN: </label>1858050278 
<br/><br/><label>Dewey Class. No.: </label>681.14  / OLT