Gregory, Robert H. <br/><br/>
Automatic data-processing systems :  principles and procedures / 
Robert H. Gregory [and] Richard L. Van Horn. 
 - San Francisco :  Wadsworth Pub. Co. ,  c1960. 
 - xii, 705 p. :  ill., diagrs., tables. ;  23 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic data processing.
<br/><br/><label>Dewey Class. No.: </label>657.26  / GRA 1960