Langenbach, Robert G. <br/><br/>
ADP Introduction to automated data processing / 
Robert G. Langenbach 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1968 
 - ix, 235 p. :  ill. ;  26 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> USD 8.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business--Data processing<br/>Punched card systems
<br/><br/><label>Dewey Class. No.: </label>651.26