ECKERN, Gilbert Hardin, Walt <br/><br/>
Business machines in action 
/[by] Gilbert Eckern, Walt Hardin 
 - California  Star publishing cop.  1980 
 - vii, 248 p. 
<br/><br/><label>ISBN: </label>898630126 
<br/><br/><label>Dewey Class. No.: </label>510.1823  / ECK