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

 - London  Mcgraw-hill  1982 
 - 539p. 
<br/><br/><label>ISBN: </label>007067325X   
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer data<br/>Data processing
<br/><br/><label>Dewey Class. No.: </label>005.7  / VER