Dock,  Thomas V   & Essick,  Edward <br/><br/>
Principles of business data processing 

 - 3rd ed 
 - Science Research Associates, Chicago  1970 
 - xvi,460p ill. 
<br/><br/><label>ISBN: </label>0-574-21130-6 
<br/><br/><label>Dewey Class. No.: </label>651.8 Doc/Ess