Hanson, Peggy. <br/><br/>
Operating data entry systems / 
Peggy Hanson. 
 - Englewood Cliffs, N. J. :  Prentice-Hall,  1977. 
 - xi, 290 p. :  ill. ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0136378196 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic data processing.<br/>Electronic digital computers--Programming.<br/>Computer input--output equipment.