Verzello, Robert, J Reutter, John <br/><br/>
Data processing  systems and concepts 

 - New Delhi  McGraw-Hill  1982 
 - 539 p.  24 cm 
<br/><br/><label>ISBN: </label>007067325X 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Electronic data processing
<br/><br/><label>Dewey Class. No.: </label>004  / VER