WU, Margaret S. <br/><br/>
Introduction to computer data processing 

 - 2nd Ed. 
 - New York.  harcourt Brace Jovanovich,Inc  , US       1979 
 - vii, 521p. 
<br/><br/><label>ISBN: </label>0-15-541635-9 
<br/><br/><label>Dewey Class. No.: </label>1.6