Hanson, Peggy L. <br/><br/>
Operating data entry systems / 
Peggy Hanson. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  c1977. 
 - xi, 290 p.  ill. ;  28 cm. 
 - 001.6/442 .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0136378196 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic data processing.<br/>Computer programming.<br/>Computer input-output equipment.
<br/><br/><label>Dewey Class. No.: </label>001.6/442