Comptometer course for business training. 

 - Chicago :  Felt & Tarrant Manufacturing Company,  c 1954. 
 - Vols. :  ill. ;  21 cm. 
<br/><br/>V. 1-- ; 
<br/><br/>336  336 
<br/><br/><label>Dewey Class. No.: </label>651.256 / C739